From 079c024ca9cd4bcbcd903fc78bfb7495aabc71d1 Mon Sep 17 00:00:00 2001
From: khodowany <khodowany@proton.me>
Date: Wed, 16 Sep 2026 23:20:10 -0500
Subject: [PATCH] Data Files

---
 .../001-cycles.xml}                           |   0
 .../002-cycles.xml}                           |   0
 .../003-cycles.xml}                           |   0
 .../004-cycles.xml}                           |   0
 .../005-cycles.xml}                           |   0
 .../006-cycles.xml}                           |   0
 .../007-cycles.xml}                           |   0
 .../008-ii-v-i-progressions.xml}              |   0
 .../009-ii-v-i-progressions.xml}              |   0
 .../010-ii-v-i-progressions.xml}              |   0
 .../011-ii-v-i-progressions.xml}              |   0
 .../012-ii-v-i-progressions.xml}              |   0
 .../013-adding-notes-to-shell-voicings.xml}   |   0
 .../014-adding-notes-to-shell-voicings.xml}   |   0
 .../015-adding-notes-to-shell-voicings.xml}   |   0
 .../016-adding-notes-to-shell-voicings.xml}   |   0
 .../017-adding-notes-to-shell-voicings.xml}   |   0
 .../018-adding-notes-to-shell-voicings.xml}   |   0
 .../019-modified-shell-voicings.xml}          |   0
 .../020-modified-shell-voicings.xml}          |   0
 .../021-modified-shell-voicings.xml}          |   0
 .../022-modified-shell-voicings.xml}          |   0
 .../023-modified-shell-voicings.xml}          |   0
 .../024-modified-shell-voicings.xml}          |   0
 .../001-cycles.xml}                           |   0
 .../002-cycles.xml}                           |   0
 .../003-cycles.xml}                           |   0
 .../004-cycles.xml}                           |   0
 .../005-cycles.xml}                           |   0
 .../006-cycles.xml}                           |   0
 .../007-cycles.xml}                           |   0
 .../008-ii-v-i-progressions-part-a.xml}       |   0
 .../009-ii-v-i-progressions-part-a.xml}       |   0
 .../010-ii-v-i-progressions-part-a.xml}       |   0
 .../011-ii-v-i-progressions-part-a.xml}       |   0
 .../012-ii-v-i-progressions-part-a.xml}       |   0
 .../013-ii-v-i-progressions-part-a.xml}       |   0
 .../014-ii-v-i-progressions-part-a.xml}       |   0
 .../015-ii-v-i-progressions-part-a.xml}       |   0
 .../016-ii-v-i-progressions-part-a.xml}       |   0
 .../017-ii-v-i-progressions-part-a.xml}       |   0
 .../018-ii-v-i-progressions-part-a.xml}       |   0
 .../019-ii-v-i-progressions-part-a.xml}       |   0
 .../020-ii-v-i-progressions-part-a.xml}       |   0
 .../021-ii-v-i-progressions-part-a.xml}       |   0
 .../022-ii-v-i-progressions-part-a.xml}       |   0
 .../023-ii-v-i-progressions-part-a.xml}       |   0
 .../024-ii-v-i-progressions-part-a.xml}       |   0
 .../025-ii-v-i-progressions-part-a.xml}       |   0
 .../026-ii-v-i-progressions-part-a.xml}       |   0
 .../027-ii-v-i-progressions-part-a.xml}       |   0
 .../028-ii-v-i-progressions-part-a.xml}       |   0
 .../029-ii-v-i-progressions-part-a.xml}       |   0
 .../030-ii-v-i-progressions-part-a.xml}       |   0
 .../031-ii-v-i-progressions-part-a.xml}       |   0
 .../032-ii-v-i-progressions-part-a.xml}       |   0
 .../033-ii-v-i-progressions-part-a.xml}       |   0
 .../034-ii-v-i-progressions-part-a.xml}       |   0
 .../035-ii-v-i-progressions-part-b.xml}       |   0
 .../036-ii-v-i-progressions-part-b.xml}       |   0
 .../037-ii-v-i-progressions-part-b.xml}       |   0
 .../038-ii-v-i-progressions-part-b.xml}       |   0
 .../039-ii-v-i-progressions-part-b.xml}       |   0
 .../040-ii-v-i-progressions-part-b.xml}       |   0
 .../041-ii-v-i-progressions-part-b.xml}       |   0
 .../042-ii-v-i-progressions-part-b.xml}       |   0
 .../043-ii-v-i-progressions-part-b.xml}       |   0
 .../044-ii-v-i-progressions-part-b.xml}       |   0
 .../045-ii-v-i-progressions-part-b.xml}       |   0
 .../046-ii-v-i-progressions-part-b.xml}       |   0
 .../047-ii-v-i-progressions-part-b.xml}       |   0
 .../048-ii-v-i-progressions-part-b.xml}       |   0
 .../049-ii-v-i-progressions-part-b.xml}       |   0
 .../050-ii-v-i-progressions-part-b.xml}       |   0
 .../051-ii-v-i-progressions-part-b.xml}       |   0
 .../052-ii-v-i-progressions-part-b.xml}       |   0
 .../053-ii-v-i-progressions-part-b.xml}       |   0
 .../054-ii-v-i-progressions-part-b.xml}       |   0
 .../055-ii-v-i-progressions-part-b.xml}       |   0
 .../056-ii-v-i-progressions-part-b.xml}       |   0
 .../057-ii-v-i-progressions-part-b.xml}       |   0
 .../058-ii-v-i-progressions-part-b.xml}       |   0
 .../059-ii-v-i-progressions-part-b.xml}       |   0
 .../060-ii-v-i-progressions-part-b.xml}       |   0
 .../061-ii-v-i-progressions-part-b.xml}       |   0
 .../062-ii-v-i-progressions-part-b.xml}       |   0
 .../063-ii-v-i-progressions-part-b.xml}       |   0
 .../064-ii-v-i-progressions-part-b.xml}       |   0
 .../065-ii-v-i-progressions-part-b.xml}       |   0
 .../066-ii-v-i-progressions-part-b.xml}       |   0
 ...the-voicings-on-other-sets-of-strings.xml} |   0
 ...the-voicings-on-other-sets-of-strings.xml} |   0
 ...the-voicings-on-other-sets-of-strings.xml} |   0
 ...the-voicings-on-other-sets-of-strings.xml} |   0
 ...the-voicings-on-other-sets-of-strings.xml} |   0
 ...the-voicings-on-other-sets-of-strings.xml} |   0
 ...the-voicings-on-other-sets-of-strings.xml} |   0
 ...the-voicings-on-other-sets-of-strings.xml} |   0
 ...the-voicings-on-other-sets-of-strings.xml} |   0
 ...the-voicings-on-other-sets-of-strings.xml} |   0
 ...the-voicings-on-other-sets-of-strings.xml} |   0
 ...the-voicings-on-other-sets-of-strings.xml} |   0
 .../001-the-diatonic-scales.xml}              |   0
 .../002-the-diatonic-scales.xml}              |   0
 .../003-the-diatonic-scales.xml}              |   0
 .../004-the-diatonic-scales.xml               | 785 ++++++++++++++++++
 .../005-the-diatonic-scales.xml               | 785 ++++++++++++++++++
 .../006-the-diatonic-scales.xml               | 785 ++++++++++++++++++
 .../007-the-diatonic-scales.xml               | 785 ++++++++++++++++++
 .../008-the-diatonic-scales.xml               | 785 ++++++++++++++++++
 .../009-the-diatonic-scales.xml               | 785 ++++++++++++++++++
 .../010-the-diatonic-scales.xml               | 785 ++++++++++++++++++
 .../011-the-diatonic-scales.xml               | 785 ++++++++++++++++++
 .../012-the-diatonic-scales.xml               | 785 ++++++++++++++++++
 .../013-the-diatonic-scales.xml               | 785 ++++++++++++++++++
 .../014-the-diatonic-scales.xml               | 785 ++++++++++++++++++
 .../015-the-diatonic-scales.xml               | 785 ++++++++++++++++++
 .../016-the-diatonic-scales.xml               | 785 ++++++++++++++++++
 .../017-diatonic-interval-studies.xml         | 785 ++++++++++++++++++
 .../018-diatonic-interval-studies.xml         | 785 ++++++++++++++++++
 .../019-diatonic-interval-studies.xml         | 785 ++++++++++++++++++
 .../020-diatonic-interval-studies.xml         | 785 ++++++++++++++++++
 .../021-diatonic-interval-studies.xml         | 785 ++++++++++++++++++
 .../022-diatonic-interval-studies.xml         | 785 ++++++++++++++++++
 .../023-diatonic-interval-studies.xml         | 785 ++++++++++++++++++
 .../024-diatonic-interval-studies.xml         | 785 ++++++++++++++++++
 .../025-diatonic-interval-studies.xml         | 785 ++++++++++++++++++
 .../026-diatonic-interval-studies.xml         | 785 ++++++++++++++++++
 .../027-diatonic-interval-studies.xml         | 785 ++++++++++++++++++
 .../028-diatonic-interval-studies.xml         | 785 ++++++++++++++++++
 .../029-diatonic-interval-studies.xml         | 785 ++++++++++++++++++
 .../030-diatonic-interval-studies.xml         | 785 ++++++++++++++++++
 .../031-diatonic-interval-studies.xml         | 785 ++++++++++++++++++
 .../032-diatonic-interval-studies.xml         | 785 ++++++++++++++++++
 .../033-diatonic-interval-studies.xml         | 785 ++++++++++++++++++
 .../034-diatonic-interval-studies.xml         | 785 ++++++++++++++++++
 .../035-diatonic-interval-studies.xml         | 785 ++++++++++++++++++
 .../036-diatonic-interval-studies.xml         | 785 ++++++++++++++++++
 .../037-diatonic-interval-studies.xml         | 785 ++++++++++++++++++
 .../038-diatonic-interval-studies.xml         | 785 ++++++++++++++++++
 .../039-diatonic-interval-studies.xml         | 785 ++++++++++++++++++
 .../040-diatonic-interval-studies.xml         | 785 ++++++++++++++++++
 .../041-diatonic-interval-studies.xml         | 785 ++++++++++++++++++
 .../042-diatonic-interval-studies.xml         | 785 ++++++++++++++++++
 .../043-diatonic-interval-studies.xml         | 785 ++++++++++++++++++
 .../044-diatonic-interval-studies.xml         | 785 ++++++++++++++++++
 .../045-diatonic-interval-studies.xml         | 785 ++++++++++++++++++
 .../046-diatonic-interval-studies.xml         | 785 ++++++++++++++++++
 .../047-diatonic-interval-studies.xml         | 785 ++++++++++++++++++
 .../048-diatonic-interval-studies.xml         | 785 ++++++++++++++++++
 .../049-diatonic-interval-studies.xml         | 785 ++++++++++++++++++
 .../050-diatonic-interval-studies.xml         | 785 ++++++++++++++++++
 .../051-diatonic-interval-studies.xml         | 785 ++++++++++++++++++
 .../052-diatonic-interval-studies.xml         | 785 ++++++++++++++++++
 .../053-diatonic-interval-studies.xml         | 785 ++++++++++++++++++
 .../054-diatonic-interval-studies.xml         | 785 ++++++++++++++++++
 .../055-diatonic-interval-studies.xml         | 785 ++++++++++++++++++
 .../056-diatonic-triad-studies.xml            | 785 ++++++++++++++++++
 .../057-diatonic-triad-studies.xml            | 785 ++++++++++++++++++
 .../058-diatonic-triad-studies.xml            | 785 ++++++++++++++++++
 .../059-diatonic-triad-studies.xml            | 785 ++++++++++++++++++
 .../060-diatonic-triad-studies.xml            | 785 ++++++++++++++++++
 .../061-diatonic-triad-studies.xml            | 785 ++++++++++++++++++
 .../062-diatonic-triad-studies.xml            | 785 ++++++++++++++++++
 .../063-diatonic-triad-studies.xml            | 785 ++++++++++++++++++
 .../064-diatonic-triad-studies.xml            | 785 ++++++++++++++++++
 .../065-diatonic-triad-studies.xml            | 785 ++++++++++++++++++
 .../066-diatonic-triad-studies.xml            | 785 ++++++++++++++++++
 .../067-diatonic-triad-studies.xml            | 785 ++++++++++++++++++
 .../068-diatonic-triad-studies.xml            | 785 ++++++++++++++++++
 .../069-diatonic-triad-studies.xml            | 785 ++++++++++++++++++
 .../070-diatonic-triad-studies.xml            | 785 ++++++++++++++++++
 .../071-diatonic-triad-studies.xml            | 785 ++++++++++++++++++
 .../072-diatonic-triad-studies.xml            | 785 ++++++++++++++++++
 .../073-diatonic-triad-studies.xml            | 785 ++++++++++++++++++
 .../074-diatonic-triad-studies.xml            | 785 ++++++++++++++++++
 .../075-diatonic-triad-studies.xml            | 785 ++++++++++++++++++
 .../076-diatonic-triad-studies.xml            | 785 ++++++++++++++++++
 .../077-spread-triads.xml                     | 785 ++++++++++++++++++
 .../078-spread-triads.xml                     | 785 ++++++++++++++++++
 .../079-spread-triads.xml                     | 785 ++++++++++++++++++
 .../080-spread-triads.xml                     | 785 ++++++++++++++++++
 .../081-spread-triads.xml                     | 785 ++++++++++++++++++
 .../082-spread-triads.xml                     | 785 ++++++++++++++++++
 .../083-spread-triads.xml                     | 785 ++++++++++++++++++
 .../084-spread-triads.xml                     | 785 ++++++++++++++++++
 .../085-spread-triads.xml                     | 785 ++++++++++++++++++
 .../086-spread-triads.xml                     | 785 ++++++++++++++++++
 .../087-spread-triads.xml                     | 785 ++++++++++++++++++
 .../088-spread-triads.xml                     | 785 ++++++++++++++++++
 .../089-spread-triads.xml                     | 785 ++++++++++++++++++
 .../090-spread-triads.xml                     | 785 ++++++++++++++++++
 .../091-spread-triads.xml                     | 785 ++++++++++++++++++
 .../092-quartal-triads.xml                    | 785 ++++++++++++++++++
 .../093-quartal-triads.xml                    | 785 ++++++++++++++++++
 .../094-quartal-triads.xml                    | 785 ++++++++++++++++++
 .../095-quartal-triads.xml                    | 785 ++++++++++++++++++
 .../096-quartal-triads.xml                    | 785 ++++++++++++++++++
 .../097-quartal-triads.xml                    | 785 ++++++++++++++++++
 .../098-quartal-triads.xml                    | 785 ++++++++++++++++++
 .../099-quartal-triads.xml                    | 785 ++++++++++++++++++
 .../100-quartal-triads.xml                    | 785 ++++++++++++++++++
 .../101-quartal-triads.xml                    | 785 ++++++++++++++++++
 .../102-quartal-triads.xml                    | 785 ++++++++++++++++++
 .../103-quartal-triads.xml                    | 785 ++++++++++++++++++
 .../104-quartal-triads.xml                    | 785 ++++++++++++++++++
 .../105-quartal-triads.xml                    | 785 ++++++++++++++++++
 .../106-quartal-triads.xml                    | 785 ++++++++++++++++++
 .../107-diatonic-interval-variations.xml      | 785 ++++++++++++++++++
 .../108-diatonic-interval-variations.xml      | 785 ++++++++++++++++++
 .../109-diatonic-interval-variations.xml      | 785 ++++++++++++++++++
 .../110-diatonic-interval-variations.xml      | 785 ++++++++++++++++++
 .../111-diatonic-interval-variations.xml      | 785 ++++++++++++++++++
 .../112-diatonic-interval-variations.xml      | 785 ++++++++++++++++++
 .../113-diatonic-interval-variations.xml      | 785 ++++++++++++++++++
 .../114-diatonic-interval-variations.xml      | 785 ++++++++++++++++++
 .../115-diatonic-interval-variations.xml      | 785 ++++++++++++++++++
 .../116-diatonic-interval-variations.xml      | 785 ++++++++++++++++++
 .../117-diatonic-interval-variations.xml      | 785 ++++++++++++++++++
 .../118-diatonic-interval-variations.xml      | 785 ++++++++++++++++++
 .../119-diatonic-interval-variations.xml      | 785 ++++++++++++++++++
 .../120-diatonic-interval-variations.xml      | 785 ++++++++++++++++++
 .../121-diatonic-7th-chords.xml               | 785 ++++++++++++++++++
 .../122-diatonic-7th-chords.xml               | 785 ++++++++++++++++++
 .../123-diatonic-7th-chords.xml               | 785 ++++++++++++++++++
 .../124-diatonic-7th-chords.xml               | 785 ++++++++++++++++++
 .../125-diatonic-7th-chords.xml               | 785 ++++++++++++++++++
 .../126-diatonic-7th-chords.xml               | 785 ++++++++++++++++++
 .../127-diatonic-7th-chords.xml               | 785 ++++++++++++++++++
 .../001-the-pentatonic-scales.xml             | 785 ++++++++++++++++++
 .../002-the-pentatonic-scales.xml             | 785 ++++++++++++++++++
 .../003-the-pentatonic-scales.xml             | 785 ++++++++++++++++++
 .../004-the-pentatonic-scales.xml             | 785 ++++++++++++++++++
 .../005-the-pentatonic-scales.xml             | 785 ++++++++++++++++++
 .../006-the-pentatonic-scales.xml             | 785 ++++++++++++++++++
 .../007-the-pentatonic-scales.xml             | 785 ++++++++++++++++++
 .../008-the-pentatonic-scales.xml             | 785 ++++++++++++++++++
 .../009-the-pentatonic-scales.xml             | 785 ++++++++++++++++++
 .../010-the-pentatonic-scales.xml             | 785 ++++++++++++++++++
 .../011-the-pentatonic-scales.xml             | 785 ++++++++++++++++++
 .../012-the-pentatonic-scales.xml             | 785 ++++++++++++++++++
 .../013-the-pentatonic-scales.xml             | 785 ++++++++++++++++++
 .../014-the-pentatonic-scales.xml             | 785 ++++++++++++++++++
 243 files changed, 108330 insertions(+)
 rename data/practice/chord/{01_three_note_shell_voicings/01-cycles.xml => 001_three_note_shell_voicings/001-cycles.xml} (100%)
 rename data/practice/chord/{01_three_note_shell_voicings/02-cycles.xml => 001_three_note_shell_voicings/002-cycles.xml} (100%)
 rename data/practice/chord/{01_three_note_shell_voicings/03-cycles.xml => 001_three_note_shell_voicings/003-cycles.xml} (100%)
 rename data/practice/chord/{01_three_note_shell_voicings/04-cycles.xml => 001_three_note_shell_voicings/004-cycles.xml} (100%)
 rename data/practice/chord/{01_three_note_shell_voicings/05-cycles.xml => 001_three_note_shell_voicings/005-cycles.xml} (100%)
 rename data/practice/chord/{01_three_note_shell_voicings/06-cycles.xml => 001_three_note_shell_voicings/006-cycles.xml} (100%)
 rename data/practice/chord/{01_three_note_shell_voicings/07-cycles.xml => 001_three_note_shell_voicings/007-cycles.xml} (100%)
 rename data/practice/chord/{01_three_note_shell_voicings/08-ii-v-i-progressions.xml => 001_three_note_shell_voicings/008-ii-v-i-progressions.xml} (100%)
 rename data/practice/chord/{01_three_note_shell_voicings/09-ii-v-i-progressions.xml => 001_three_note_shell_voicings/009-ii-v-i-progressions.xml} (100%)
 rename data/practice/chord/{01_three_note_shell_voicings/10-ii-v-i-progressions.xml => 001_three_note_shell_voicings/010-ii-v-i-progressions.xml} (100%)
 rename data/practice/chord/{01_three_note_shell_voicings/11-ii-v-i-progressions.xml => 001_three_note_shell_voicings/011-ii-v-i-progressions.xml} (100%)
 rename data/practice/chord/{01_three_note_shell_voicings/12-ii-v-i-progressions.xml => 001_three_note_shell_voicings/012-ii-v-i-progressions.xml} (100%)
 rename data/practice/chord/{01_three_note_shell_voicings/13-adding-notes-to-shell-voicings.xml => 001_three_note_shell_voicings/013-adding-notes-to-shell-voicings.xml} (100%)
 rename data/practice/chord/{01_three_note_shell_voicings/14-adding-notes-to-shell-voicings.xml => 001_three_note_shell_voicings/014-adding-notes-to-shell-voicings.xml} (100%)
 rename data/practice/chord/{01_three_note_shell_voicings/15-adding-notes-to-shell-voicings.xml => 001_three_note_shell_voicings/015-adding-notes-to-shell-voicings.xml} (100%)
 rename data/practice/chord/{01_three_note_shell_voicings/16-adding-notes-to-shell-voicings.xml => 001_three_note_shell_voicings/016-adding-notes-to-shell-voicings.xml} (100%)
 rename data/practice/chord/{01_three_note_shell_voicings/17-adding-notes-to-shell-voicings.xml => 001_three_note_shell_voicings/017-adding-notes-to-shell-voicings.xml} (100%)
 rename data/practice/chord/{01_three_note_shell_voicings/18-adding-notes-to-shell-voicings.xml => 001_three_note_shell_voicings/018-adding-notes-to-shell-voicings.xml} (100%)
 rename data/practice/chord/{01_three_note_shell_voicings/19-modified-shell-voicings.xml => 001_three_note_shell_voicings/019-modified-shell-voicings.xml} (100%)
 rename data/practice/chord/{01_three_note_shell_voicings/20-modified-shell-voicings.xml => 001_three_note_shell_voicings/020-modified-shell-voicings.xml} (100%)
 rename data/practice/chord/{01_three_note_shell_voicings/21-modified-shell-voicings.xml => 001_three_note_shell_voicings/021-modified-shell-voicings.xml} (100%)
 rename data/practice/chord/{01_three_note_shell_voicings/22-modified-shell-voicings.xml => 001_three_note_shell_voicings/022-modified-shell-voicings.xml} (100%)
 rename data/practice/chord/{01_three_note_shell_voicings/23-modified-shell-voicings.xml => 001_three_note_shell_voicings/023-modified-shell-voicings.xml} (100%)
 rename data/practice/chord/{01_three_note_shell_voicings/24-modified-shell-voicings.xml => 001_three_note_shell_voicings/024-modified-shell-voicings.xml} (100%)
 rename data/practice/chord/{02_three_note_comping_derived_from_shells/01-cycles.xml => 002_three_note_comping_derived_from_shells/001-cycles.xml} (100%)
 rename data/practice/chord/{02_three_note_comping_derived_from_shells/02-cycles.xml => 002_three_note_comping_derived_from_shells/002-cycles.xml} (100%)
 rename data/practice/chord/{02_three_note_comping_derived_from_shells/03-cycles.xml => 002_three_note_comping_derived_from_shells/003-cycles.xml} (100%)
 rename data/practice/chord/{02_three_note_comping_derived_from_shells/04-cycles.xml => 002_three_note_comping_derived_from_shells/004-cycles.xml} (100%)
 rename data/practice/chord/{02_three_note_comping_derived_from_shells/05-cycles.xml => 002_three_note_comping_derived_from_shells/005-cycles.xml} (100%)
 rename data/practice/chord/{02_three_note_comping_derived_from_shells/06-cycles.xml => 002_three_note_comping_derived_from_shells/006-cycles.xml} (100%)
 rename data/practice/chord/{02_three_note_comping_derived_from_shells/07-cycles.xml => 002_three_note_comping_derived_from_shells/007-cycles.xml} (100%)
 rename data/practice/chord/{02_three_note_comping_derived_from_shells/08-ii-v-i-progressions-part-a.xml => 002_three_note_comping_derived_from_shells/008-ii-v-i-progressions-part-a.xml} (100%)
 rename data/practice/chord/{02_three_note_comping_derived_from_shells/09-ii-v-i-progressions-part-a.xml => 002_three_note_comping_derived_from_shells/009-ii-v-i-progressions-part-a.xml} (100%)
 rename data/practice/chord/{02_three_note_comping_derived_from_shells/10-ii-v-i-progressions-part-a.xml => 002_three_note_comping_derived_from_shells/010-ii-v-i-progressions-part-a.xml} (100%)
 rename data/practice/chord/{02_three_note_comping_derived_from_shells/11-ii-v-i-progressions-part-a.xml => 002_three_note_comping_derived_from_shells/011-ii-v-i-progressions-part-a.xml} (100%)
 rename data/practice/chord/{02_three_note_comping_derived_from_shells/12-ii-v-i-progressions-part-a.xml => 002_three_note_comping_derived_from_shells/012-ii-v-i-progressions-part-a.xml} (100%)
 rename data/practice/chord/{02_three_note_comping_derived_from_shells/13-ii-v-i-progressions-part-a.xml => 002_three_note_comping_derived_from_shells/013-ii-v-i-progressions-part-a.xml} (100%)
 rename data/practice/chord/{02_three_note_comping_derived_from_shells/14-ii-v-i-progressions-part-a.xml => 002_three_note_comping_derived_from_shells/014-ii-v-i-progressions-part-a.xml} (100%)
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diff --git a/data/practice/chord/02_three_note_comping_derived_from_shells/08-ii-v-i-progressions-part-a.xml b/data/practice/chord/002_three_note_comping_derived_from_shells/008-ii-v-i-progressions-part-a.xml
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similarity index 100%
rename from data/practice/chord/02_three_note_comping_derived_from_shells/60-ii-v-i-progressions-part-b.xml
rename to data/practice/chord/002_three_note_comping_derived_from_shells/060-ii-v-i-progressions-part-b.xml
diff --git a/data/practice/chord/02_three_note_comping_derived_from_shells/61-ii-v-i-progressions-part-b.xml b/data/practice/chord/002_three_note_comping_derived_from_shells/061-ii-v-i-progressions-part-b.xml
similarity index 100%
rename from data/practice/chord/02_three_note_comping_derived_from_shells/61-ii-v-i-progressions-part-b.xml
rename to data/practice/chord/002_three_note_comping_derived_from_shells/061-ii-v-i-progressions-part-b.xml
diff --git a/data/practice/chord/02_three_note_comping_derived_from_shells/62-ii-v-i-progressions-part-b.xml b/data/practice/chord/002_three_note_comping_derived_from_shells/062-ii-v-i-progressions-part-b.xml
similarity index 100%
rename from data/practice/chord/02_three_note_comping_derived_from_shells/62-ii-v-i-progressions-part-b.xml
rename to data/practice/chord/002_three_note_comping_derived_from_shells/062-ii-v-i-progressions-part-b.xml
diff --git a/data/practice/chord/02_three_note_comping_derived_from_shells/63-ii-v-i-progressions-part-b.xml b/data/practice/chord/002_three_note_comping_derived_from_shells/063-ii-v-i-progressions-part-b.xml
similarity index 100%
rename from data/practice/chord/02_three_note_comping_derived_from_shells/63-ii-v-i-progressions-part-b.xml
rename to data/practice/chord/002_three_note_comping_derived_from_shells/063-ii-v-i-progressions-part-b.xml
diff --git a/data/practice/chord/02_three_note_comping_derived_from_shells/64-ii-v-i-progressions-part-b.xml b/data/practice/chord/002_three_note_comping_derived_from_shells/064-ii-v-i-progressions-part-b.xml
similarity index 100%
rename from data/practice/chord/02_three_note_comping_derived_from_shells/64-ii-v-i-progressions-part-b.xml
rename to data/practice/chord/002_three_note_comping_derived_from_shells/064-ii-v-i-progressions-part-b.xml
diff --git a/data/practice/chord/02_three_note_comping_derived_from_shells/65-ii-v-i-progressions-part-b.xml b/data/practice/chord/002_three_note_comping_derived_from_shells/065-ii-v-i-progressions-part-b.xml
similarity index 100%
rename from data/practice/chord/02_three_note_comping_derived_from_shells/65-ii-v-i-progressions-part-b.xml
rename to data/practice/chord/002_three_note_comping_derived_from_shells/065-ii-v-i-progressions-part-b.xml
diff --git a/data/practice/chord/02_three_note_comping_derived_from_shells/66-ii-v-i-progressions-part-b.xml b/data/practice/chord/002_three_note_comping_derived_from_shells/066-ii-v-i-progressions-part-b.xml
similarity index 100%
rename from data/practice/chord/02_three_note_comping_derived_from_shells/66-ii-v-i-progressions-part-b.xml
rename to data/practice/chord/002_three_note_comping_derived_from_shells/066-ii-v-i-progressions-part-b.xml
diff --git a/data/practice/chord/02_three_note_comping_derived_from_shells/67-playing-the-voicings-on-other-sets-of-strings.xml b/data/practice/chord/002_three_note_comping_derived_from_shells/067-playing-the-voicings-on-other-sets-of-strings.xml
similarity index 100%
rename from data/practice/chord/02_three_note_comping_derived_from_shells/67-playing-the-voicings-on-other-sets-of-strings.xml
rename to data/practice/chord/002_three_note_comping_derived_from_shells/067-playing-the-voicings-on-other-sets-of-strings.xml
diff --git a/data/practice/chord/02_three_note_comping_derived_from_shells/68-playing-the-voicings-on-other-sets-of-strings.xml b/data/practice/chord/002_three_note_comping_derived_from_shells/068-playing-the-voicings-on-other-sets-of-strings.xml
similarity index 100%
rename from data/practice/chord/02_three_note_comping_derived_from_shells/68-playing-the-voicings-on-other-sets-of-strings.xml
rename to data/practice/chord/002_three_note_comping_derived_from_shells/068-playing-the-voicings-on-other-sets-of-strings.xml
diff --git a/data/practice/chord/02_three_note_comping_derived_from_shells/69-playing-the-voicings-on-other-sets-of-strings.xml b/data/practice/chord/002_three_note_comping_derived_from_shells/069-playing-the-voicings-on-other-sets-of-strings.xml
similarity index 100%
rename from data/practice/chord/02_three_note_comping_derived_from_shells/69-playing-the-voicings-on-other-sets-of-strings.xml
rename to data/practice/chord/002_three_note_comping_derived_from_shells/069-playing-the-voicings-on-other-sets-of-strings.xml
diff --git a/data/practice/chord/02_three_note_comping_derived_from_shells/70-playing-the-voicings-on-other-sets-of-strings.xml b/data/practice/chord/002_three_note_comping_derived_from_shells/070-playing-the-voicings-on-other-sets-of-strings.xml
similarity index 100%
rename from data/practice/chord/02_three_note_comping_derived_from_shells/70-playing-the-voicings-on-other-sets-of-strings.xml
rename to data/practice/chord/002_three_note_comping_derived_from_shells/070-playing-the-voicings-on-other-sets-of-strings.xml
diff --git a/data/practice/chord/02_three_note_comping_derived_from_shells/71-playing-the-voicings-on-other-sets-of-strings.xml b/data/practice/chord/002_three_note_comping_derived_from_shells/071-playing-the-voicings-on-other-sets-of-strings.xml
similarity index 100%
rename from data/practice/chord/02_three_note_comping_derived_from_shells/71-playing-the-voicings-on-other-sets-of-strings.xml
rename to data/practice/chord/002_three_note_comping_derived_from_shells/071-playing-the-voicings-on-other-sets-of-strings.xml
diff --git a/data/practice/chord/02_three_note_comping_derived_from_shells/72-playing-the-voicings-on-other-sets-of-strings.xml b/data/practice/chord/002_three_note_comping_derived_from_shells/072-playing-the-voicings-on-other-sets-of-strings.xml
similarity index 100%
rename from data/practice/chord/02_three_note_comping_derived_from_shells/72-playing-the-voicings-on-other-sets-of-strings.xml
rename to data/practice/chord/002_three_note_comping_derived_from_shells/072-playing-the-voicings-on-other-sets-of-strings.xml
diff --git a/data/practice/chord/02_three_note_comping_derived_from_shells/73-playing-the-voicings-on-other-sets-of-strings.xml b/data/practice/chord/002_three_note_comping_derived_from_shells/073-playing-the-voicings-on-other-sets-of-strings.xml
similarity index 100%
rename from data/practice/chord/02_three_note_comping_derived_from_shells/73-playing-the-voicings-on-other-sets-of-strings.xml
rename to data/practice/chord/002_three_note_comping_derived_from_shells/073-playing-the-voicings-on-other-sets-of-strings.xml
diff --git a/data/practice/chord/02_three_note_comping_derived_from_shells/74-playing-the-voicings-on-other-sets-of-strings.xml b/data/practice/chord/002_three_note_comping_derived_from_shells/074-playing-the-voicings-on-other-sets-of-strings.xml
similarity index 100%
rename from data/practice/chord/02_three_note_comping_derived_from_shells/74-playing-the-voicings-on-other-sets-of-strings.xml
rename to data/practice/chord/002_three_note_comping_derived_from_shells/074-playing-the-voicings-on-other-sets-of-strings.xml
diff --git a/data/practice/chord/02_three_note_comping_derived_from_shells/75-playing-the-voicings-on-other-sets-of-strings.xml b/data/practice/chord/002_three_note_comping_derived_from_shells/075-playing-the-voicings-on-other-sets-of-strings.xml
similarity index 100%
rename from data/practice/chord/02_three_note_comping_derived_from_shells/75-playing-the-voicings-on-other-sets-of-strings.xml
rename to data/practice/chord/002_three_note_comping_derived_from_shells/075-playing-the-voicings-on-other-sets-of-strings.xml
diff --git a/data/practice/chord/02_three_note_comping_derived_from_shells/76-playing-the-voicings-on-other-sets-of-strings.xml b/data/practice/chord/002_three_note_comping_derived_from_shells/076-playing-the-voicings-on-other-sets-of-strings.xml
similarity index 100%
rename from data/practice/chord/02_three_note_comping_derived_from_shells/76-playing-the-voicings-on-other-sets-of-strings.xml
rename to data/practice/chord/002_three_note_comping_derived_from_shells/076-playing-the-voicings-on-other-sets-of-strings.xml
diff --git a/data/practice/chord/02_three_note_comping_derived_from_shells/77-playing-the-voicings-on-other-sets-of-strings.xml b/data/practice/chord/002_three_note_comping_derived_from_shells/077-playing-the-voicings-on-other-sets-of-strings.xml
similarity index 100%
rename from data/practice/chord/02_three_note_comping_derived_from_shells/77-playing-the-voicings-on-other-sets-of-strings.xml
rename to data/practice/chord/002_three_note_comping_derived_from_shells/077-playing-the-voicings-on-other-sets-of-strings.xml
diff --git a/data/practice/chord/02_three_note_comping_derived_from_shells/78-playing-the-voicings-on-other-sets-of-strings.xml b/data/practice/chord/002_three_note_comping_derived_from_shells/078-playing-the-voicings-on-other-sets-of-strings.xml
similarity index 100%
rename from data/practice/chord/02_three_note_comping_derived_from_shells/78-playing-the-voicings-on-other-sets-of-strings.xml
rename to data/practice/chord/002_three_note_comping_derived_from_shells/078-playing-the-voicings-on-other-sets-of-strings.xml
diff --git a/data/practice/melody/01_diatonic_excercises/01-the-diatonic-scales.xml b/data/practice/melody/001_diatonic_excercises/001-the-diatonic-scales.xml
similarity index 100%
rename from data/practice/melody/01_diatonic_excercises/01-the-diatonic-scales.xml
rename to data/practice/melody/001_diatonic_excercises/001-the-diatonic-scales.xml
diff --git a/data/practice/melody/01_diatonic_excercises/02-the-diatonic-scales.xml b/data/practice/melody/001_diatonic_excercises/002-the-diatonic-scales.xml
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rename to data/practice/melody/001_diatonic_excercises/002-the-diatonic-scales.xml
diff --git a/data/practice/melody/01_diatonic_excercises/03-the-diatonic-scales.xml b/data/practice/melody/001_diatonic_excercises/003-the-diatonic-scales.xml
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rename from data/practice/melody/01_diatonic_excercises/03-the-diatonic-scales.xml
rename to data/practice/melody/001_diatonic_excercises/003-the-diatonic-scales.xml
diff --git a/data/practice/melody/001_diatonic_excercises/004-the-diatonic-scales.xml b/data/practice/melody/001_diatonic_excercises/004-the-diatonic-scales.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/001_diatonic_excercises/004-the-diatonic-scales.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="3">
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="10">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/001_diatonic_excercises/005-the-diatonic-scales.xml b/data/practice/melody/001_diatonic_excercises/005-the-diatonic-scales.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/001_diatonic_excercises/005-the-diatonic-scales.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="3">
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="10">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/001_diatonic_excercises/006-the-diatonic-scales.xml b/data/practice/melody/001_diatonic_excercises/006-the-diatonic-scales.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/001_diatonic_excercises/006-the-diatonic-scales.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="3">
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="10">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/001_diatonic_excercises/007-the-diatonic-scales.xml b/data/practice/melody/001_diatonic_excercises/007-the-diatonic-scales.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/001_diatonic_excercises/007-the-diatonic-scales.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="3">
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="10">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/001_diatonic_excercises/008-the-diatonic-scales.xml b/data/practice/melody/001_diatonic_excercises/008-the-diatonic-scales.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/001_diatonic_excercises/008-the-diatonic-scales.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="3">
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="10">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/001_diatonic_excercises/009-the-diatonic-scales.xml b/data/practice/melody/001_diatonic_excercises/009-the-diatonic-scales.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/001_diatonic_excercises/009-the-diatonic-scales.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="3">
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="10">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/001_diatonic_excercises/010-the-diatonic-scales.xml b/data/practice/melody/001_diatonic_excercises/010-the-diatonic-scales.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/001_diatonic_excercises/010-the-diatonic-scales.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="3">
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="10">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/001_diatonic_excercises/011-the-diatonic-scales.xml b/data/practice/melody/001_diatonic_excercises/011-the-diatonic-scales.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/001_diatonic_excercises/011-the-diatonic-scales.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="3">
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="10">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/001_diatonic_excercises/012-the-diatonic-scales.xml b/data/practice/melody/001_diatonic_excercises/012-the-diatonic-scales.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/001_diatonic_excercises/012-the-diatonic-scales.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="3">
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="10">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/001_diatonic_excercises/013-the-diatonic-scales.xml b/data/practice/melody/001_diatonic_excercises/013-the-diatonic-scales.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/001_diatonic_excercises/013-the-diatonic-scales.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="3">
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="10">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/001_diatonic_excercises/014-the-diatonic-scales.xml b/data/practice/melody/001_diatonic_excercises/014-the-diatonic-scales.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/001_diatonic_excercises/014-the-diatonic-scales.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="3">
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="10">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/001_diatonic_excercises/015-the-diatonic-scales.xml b/data/practice/melody/001_diatonic_excercises/015-the-diatonic-scales.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/001_diatonic_excercises/015-the-diatonic-scales.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="3">
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="10">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/001_diatonic_excercises/016-the-diatonic-scales.xml b/data/practice/melody/001_diatonic_excercises/016-the-diatonic-scales.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/001_diatonic_excercises/016-the-diatonic-scales.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="3">
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="10">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/001_diatonic_excercises/017-diatonic-interval-studies.xml b/data/practice/melody/001_diatonic_excercises/017-diatonic-interval-studies.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/001_diatonic_excercises/017-diatonic-interval-studies.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="3">
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="10">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/001_diatonic_excercises/018-diatonic-interval-studies.xml b/data/practice/melody/001_diatonic_excercises/018-diatonic-interval-studies.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/001_diatonic_excercises/018-diatonic-interval-studies.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="3">
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="10">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/001_diatonic_excercises/019-diatonic-interval-studies.xml b/data/practice/melody/001_diatonic_excercises/019-diatonic-interval-studies.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/001_diatonic_excercises/019-diatonic-interval-studies.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="3">
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="10">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/001_diatonic_excercises/020-diatonic-interval-studies.xml b/data/practice/melody/001_diatonic_excercises/020-diatonic-interval-studies.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/001_diatonic_excercises/020-diatonic-interval-studies.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="3">
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="10">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/001_diatonic_excercises/021-diatonic-interval-studies.xml b/data/practice/melody/001_diatonic_excercises/021-diatonic-interval-studies.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/001_diatonic_excercises/021-diatonic-interval-studies.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="3">
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="10">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/001_diatonic_excercises/022-diatonic-interval-studies.xml b/data/practice/melody/001_diatonic_excercises/022-diatonic-interval-studies.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/001_diatonic_excercises/022-diatonic-interval-studies.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="3">
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="10">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/001_diatonic_excercises/023-diatonic-interval-studies.xml b/data/practice/melody/001_diatonic_excercises/023-diatonic-interval-studies.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/001_diatonic_excercises/023-diatonic-interval-studies.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="3">
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="10">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/001_diatonic_excercises/024-diatonic-interval-studies.xml b/data/practice/melody/001_diatonic_excercises/024-diatonic-interval-studies.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/001_diatonic_excercises/024-diatonic-interval-studies.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="3">
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="10">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/001_diatonic_excercises/025-diatonic-interval-studies.xml b/data/practice/melody/001_diatonic_excercises/025-diatonic-interval-studies.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/001_diatonic_excercises/025-diatonic-interval-studies.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="3">
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="10">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/001_diatonic_excercises/026-diatonic-interval-studies.xml b/data/practice/melody/001_diatonic_excercises/026-diatonic-interval-studies.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/001_diatonic_excercises/026-diatonic-interval-studies.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="3">
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="10">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/001_diatonic_excercises/027-diatonic-interval-studies.xml b/data/practice/melody/001_diatonic_excercises/027-diatonic-interval-studies.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/001_diatonic_excercises/027-diatonic-interval-studies.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="3">
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="10">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/001_diatonic_excercises/028-diatonic-interval-studies.xml b/data/practice/melody/001_diatonic_excercises/028-diatonic-interval-studies.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/001_diatonic_excercises/028-diatonic-interval-studies.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="3">
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="10">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/001_diatonic_excercises/029-diatonic-interval-studies.xml b/data/practice/melody/001_diatonic_excercises/029-diatonic-interval-studies.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/001_diatonic_excercises/029-diatonic-interval-studies.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="3">
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="10">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/001_diatonic_excercises/030-diatonic-interval-studies.xml b/data/practice/melody/001_diatonic_excercises/030-diatonic-interval-studies.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/001_diatonic_excercises/030-diatonic-interval-studies.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="3">
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="10">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/001_diatonic_excercises/031-diatonic-interval-studies.xml b/data/practice/melody/001_diatonic_excercises/031-diatonic-interval-studies.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/001_diatonic_excercises/031-diatonic-interval-studies.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="3">
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="10">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/001_diatonic_excercises/032-diatonic-interval-studies.xml b/data/practice/melody/001_diatonic_excercises/032-diatonic-interval-studies.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/001_diatonic_excercises/032-diatonic-interval-studies.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="3">
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="10">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/001_diatonic_excercises/033-diatonic-interval-studies.xml b/data/practice/melody/001_diatonic_excercises/033-diatonic-interval-studies.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/001_diatonic_excercises/033-diatonic-interval-studies.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="3">
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="10">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/001_diatonic_excercises/034-diatonic-interval-studies.xml b/data/practice/melody/001_diatonic_excercises/034-diatonic-interval-studies.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/001_diatonic_excercises/034-diatonic-interval-studies.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="3">
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="10">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/001_diatonic_excercises/035-diatonic-interval-studies.xml b/data/practice/melody/001_diatonic_excercises/035-diatonic-interval-studies.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/001_diatonic_excercises/035-diatonic-interval-studies.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="3">
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="10">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/001_diatonic_excercises/036-diatonic-interval-studies.xml b/data/practice/melody/001_diatonic_excercises/036-diatonic-interval-studies.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/001_diatonic_excercises/036-diatonic-interval-studies.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="3">
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="10">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/001_diatonic_excercises/037-diatonic-interval-studies.xml b/data/practice/melody/001_diatonic_excercises/037-diatonic-interval-studies.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/001_diatonic_excercises/037-diatonic-interval-studies.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="3">
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="10">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/001_diatonic_excercises/038-diatonic-interval-studies.xml b/data/practice/melody/001_diatonic_excercises/038-diatonic-interval-studies.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/001_diatonic_excercises/038-diatonic-interval-studies.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="3">
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="10">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/001_diatonic_excercises/039-diatonic-interval-studies.xml b/data/practice/melody/001_diatonic_excercises/039-diatonic-interval-studies.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/001_diatonic_excercises/039-diatonic-interval-studies.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="3">
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="10">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/001_diatonic_excercises/040-diatonic-interval-studies.xml b/data/practice/melody/001_diatonic_excercises/040-diatonic-interval-studies.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/001_diatonic_excercises/040-diatonic-interval-studies.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="3">
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="10">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/001_diatonic_excercises/041-diatonic-interval-studies.xml b/data/practice/melody/001_diatonic_excercises/041-diatonic-interval-studies.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/001_diatonic_excercises/041-diatonic-interval-studies.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="3">
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="10">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/001_diatonic_excercises/042-diatonic-interval-studies.xml b/data/practice/melody/001_diatonic_excercises/042-diatonic-interval-studies.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/001_diatonic_excercises/042-diatonic-interval-studies.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="3">
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="10">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/001_diatonic_excercises/043-diatonic-interval-studies.xml b/data/practice/melody/001_diatonic_excercises/043-diatonic-interval-studies.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/001_diatonic_excercises/043-diatonic-interval-studies.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="3">
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="10">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/001_diatonic_excercises/044-diatonic-interval-studies.xml b/data/practice/melody/001_diatonic_excercises/044-diatonic-interval-studies.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/001_diatonic_excercises/044-diatonic-interval-studies.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="3">
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="10">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/001_diatonic_excercises/045-diatonic-interval-studies.xml b/data/practice/melody/001_diatonic_excercises/045-diatonic-interval-studies.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/001_diatonic_excercises/045-diatonic-interval-studies.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="3">
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="10">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/001_diatonic_excercises/046-diatonic-interval-studies.xml b/data/practice/melody/001_diatonic_excercises/046-diatonic-interval-studies.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/001_diatonic_excercises/046-diatonic-interval-studies.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="3">
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="10">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/001_diatonic_excercises/047-diatonic-interval-studies.xml b/data/practice/melody/001_diatonic_excercises/047-diatonic-interval-studies.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/001_diatonic_excercises/047-diatonic-interval-studies.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="3">
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="10">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/001_diatonic_excercises/048-diatonic-interval-studies.xml b/data/practice/melody/001_diatonic_excercises/048-diatonic-interval-studies.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/001_diatonic_excercises/048-diatonic-interval-studies.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="3">
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="10">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/001_diatonic_excercises/049-diatonic-interval-studies.xml b/data/practice/melody/001_diatonic_excercises/049-diatonic-interval-studies.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/001_diatonic_excercises/049-diatonic-interval-studies.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="3">
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="10">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/001_diatonic_excercises/050-diatonic-interval-studies.xml b/data/practice/melody/001_diatonic_excercises/050-diatonic-interval-studies.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/001_diatonic_excercises/050-diatonic-interval-studies.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="3">
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="10">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/001_diatonic_excercises/051-diatonic-interval-studies.xml b/data/practice/melody/001_diatonic_excercises/051-diatonic-interval-studies.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/001_diatonic_excercises/051-diatonic-interval-studies.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="3">
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="10">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/001_diatonic_excercises/052-diatonic-interval-studies.xml b/data/practice/melody/001_diatonic_excercises/052-diatonic-interval-studies.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/001_diatonic_excercises/052-diatonic-interval-studies.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="3">
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="10">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/001_diatonic_excercises/053-diatonic-interval-studies.xml b/data/practice/melody/001_diatonic_excercises/053-diatonic-interval-studies.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/001_diatonic_excercises/053-diatonic-interval-studies.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="3">
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="10">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/001_diatonic_excercises/054-diatonic-interval-studies.xml b/data/practice/melody/001_diatonic_excercises/054-diatonic-interval-studies.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/001_diatonic_excercises/054-diatonic-interval-studies.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="3">
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="10">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/001_diatonic_excercises/055-diatonic-interval-studies.xml b/data/practice/melody/001_diatonic_excercises/055-diatonic-interval-studies.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/001_diatonic_excercises/055-diatonic-interval-studies.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="3">
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="10">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/001_diatonic_excercises/056-diatonic-triad-studies.xml b/data/practice/melody/001_diatonic_excercises/056-diatonic-triad-studies.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/001_diatonic_excercises/056-diatonic-triad-studies.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="3">
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="10">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/001_diatonic_excercises/057-diatonic-triad-studies.xml b/data/practice/melody/001_diatonic_excercises/057-diatonic-triad-studies.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/001_diatonic_excercises/057-diatonic-triad-studies.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="3">
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="10">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/001_diatonic_excercises/058-diatonic-triad-studies.xml b/data/practice/melody/001_diatonic_excercises/058-diatonic-triad-studies.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/001_diatonic_excercises/058-diatonic-triad-studies.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
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+          <octave>4</octave>
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+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
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+      <note>
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+          <step>E</step>
+          <octave>4</octave>
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+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
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+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
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+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
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+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
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+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
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+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="3">
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="10">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/001_diatonic_excercises/059-diatonic-triad-studies.xml b/data/practice/melody/001_diatonic_excercises/059-diatonic-triad-studies.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/001_diatonic_excercises/059-diatonic-triad-studies.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="3">
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="10">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/001_diatonic_excercises/060-diatonic-triad-studies.xml b/data/practice/melody/001_diatonic_excercises/060-diatonic-triad-studies.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/001_diatonic_excercises/060-diatonic-triad-studies.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="3">
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="10">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/001_diatonic_excercises/061-diatonic-triad-studies.xml b/data/practice/melody/001_diatonic_excercises/061-diatonic-triad-studies.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/001_diatonic_excercises/061-diatonic-triad-studies.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
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+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="3">
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="10">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/001_diatonic_excercises/062-diatonic-triad-studies.xml b/data/practice/melody/001_diatonic_excercises/062-diatonic-triad-studies.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/001_diatonic_excercises/062-diatonic-triad-studies.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="3">
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="10">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/001_diatonic_excercises/063-diatonic-triad-studies.xml b/data/practice/melody/001_diatonic_excercises/063-diatonic-triad-studies.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/001_diatonic_excercises/063-diatonic-triad-studies.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="3">
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="10">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/001_diatonic_excercises/064-diatonic-triad-studies.xml b/data/practice/melody/001_diatonic_excercises/064-diatonic-triad-studies.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/001_diatonic_excercises/064-diatonic-triad-studies.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="3">
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="10">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/001_diatonic_excercises/065-diatonic-triad-studies.xml b/data/practice/melody/001_diatonic_excercises/065-diatonic-triad-studies.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/001_diatonic_excercises/065-diatonic-triad-studies.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="3">
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="10">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/001_diatonic_excercises/066-diatonic-triad-studies.xml b/data/practice/melody/001_diatonic_excercises/066-diatonic-triad-studies.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/001_diatonic_excercises/066-diatonic-triad-studies.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="3">
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="10">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/001_diatonic_excercises/067-diatonic-triad-studies.xml b/data/practice/melody/001_diatonic_excercises/067-diatonic-triad-studies.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/001_diatonic_excercises/067-diatonic-triad-studies.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="3">
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="10">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/001_diatonic_excercises/068-diatonic-triad-studies.xml b/data/practice/melody/001_diatonic_excercises/068-diatonic-triad-studies.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/001_diatonic_excercises/068-diatonic-triad-studies.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="3">
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="10">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/001_diatonic_excercises/069-diatonic-triad-studies.xml b/data/practice/melody/001_diatonic_excercises/069-diatonic-triad-studies.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/001_diatonic_excercises/069-diatonic-triad-studies.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="3">
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="10">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/001_diatonic_excercises/070-diatonic-triad-studies.xml b/data/practice/melody/001_diatonic_excercises/070-diatonic-triad-studies.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/001_diatonic_excercises/070-diatonic-triad-studies.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="3">
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="10">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/001_diatonic_excercises/071-diatonic-triad-studies.xml b/data/practice/melody/001_diatonic_excercises/071-diatonic-triad-studies.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/001_diatonic_excercises/071-diatonic-triad-studies.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="3">
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="10">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/001_diatonic_excercises/072-diatonic-triad-studies.xml b/data/practice/melody/001_diatonic_excercises/072-diatonic-triad-studies.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/001_diatonic_excercises/072-diatonic-triad-studies.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="3">
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="10">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/001_diatonic_excercises/073-diatonic-triad-studies.xml b/data/practice/melody/001_diatonic_excercises/073-diatonic-triad-studies.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/001_diatonic_excercises/073-diatonic-triad-studies.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="3">
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="10">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/001_diatonic_excercises/074-diatonic-triad-studies.xml b/data/practice/melody/001_diatonic_excercises/074-diatonic-triad-studies.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/001_diatonic_excercises/074-diatonic-triad-studies.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="3">
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="10">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/001_diatonic_excercises/075-diatonic-triad-studies.xml b/data/practice/melody/001_diatonic_excercises/075-diatonic-triad-studies.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/001_diatonic_excercises/075-diatonic-triad-studies.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="3">
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="10">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/001_diatonic_excercises/076-diatonic-triad-studies.xml b/data/practice/melody/001_diatonic_excercises/076-diatonic-triad-studies.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/001_diatonic_excercises/076-diatonic-triad-studies.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="3">
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="10">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/001_diatonic_excercises/077-spread-triads.xml b/data/practice/melody/001_diatonic_excercises/077-spread-triads.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/001_diatonic_excercises/077-spread-triads.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="3">
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="10">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/001_diatonic_excercises/078-spread-triads.xml b/data/practice/melody/001_diatonic_excercises/078-spread-triads.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/001_diatonic_excercises/078-spread-triads.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="3">
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="10">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/001_diatonic_excercises/079-spread-triads.xml b/data/practice/melody/001_diatonic_excercises/079-spread-triads.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/001_diatonic_excercises/079-spread-triads.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="3">
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="10">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/001_diatonic_excercises/080-spread-triads.xml b/data/practice/melody/001_diatonic_excercises/080-spread-triads.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/001_diatonic_excercises/080-spread-triads.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="3">
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="10">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/001_diatonic_excercises/081-spread-triads.xml b/data/practice/melody/001_diatonic_excercises/081-spread-triads.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/001_diatonic_excercises/081-spread-triads.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="3">
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="10">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/001_diatonic_excercises/082-spread-triads.xml b/data/practice/melody/001_diatonic_excercises/082-spread-triads.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/001_diatonic_excercises/082-spread-triads.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="3">
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="10">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/001_diatonic_excercises/083-spread-triads.xml b/data/practice/melody/001_diatonic_excercises/083-spread-triads.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/001_diatonic_excercises/083-spread-triads.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="3">
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="10">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/001_diatonic_excercises/084-spread-triads.xml b/data/practice/melody/001_diatonic_excercises/084-spread-triads.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/001_diatonic_excercises/084-spread-triads.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="3">
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="10">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/001_diatonic_excercises/085-spread-triads.xml b/data/practice/melody/001_diatonic_excercises/085-spread-triads.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/001_diatonic_excercises/085-spread-triads.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="3">
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="10">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/001_diatonic_excercises/086-spread-triads.xml b/data/practice/melody/001_diatonic_excercises/086-spread-triads.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/001_diatonic_excercises/086-spread-triads.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="3">
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="10">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/001_diatonic_excercises/087-spread-triads.xml b/data/practice/melody/001_diatonic_excercises/087-spread-triads.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/001_diatonic_excercises/087-spread-triads.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="3">
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
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+      <note>
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+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
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+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
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+      <note>
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+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
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+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
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+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
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+        <beam number="1">continue</beam>
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+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="10">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/001_diatonic_excercises/088-spread-triads.xml b/data/practice/melody/001_diatonic_excercises/088-spread-triads.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/001_diatonic_excercises/088-spread-triads.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="3">
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
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+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
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+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
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+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
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+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
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+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
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+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
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+        <type>eighth</type>
+        <beam number="1">continue</beam>
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+          <octave>4</octave>
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+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/001_diatonic_excercises/089-spread-triads.xml b/data/practice/melody/001_diatonic_excercises/089-spread-triads.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/001_diatonic_excercises/089-spread-triads.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="3">
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
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+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
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+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
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+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
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+          <octave>5</octave>
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+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
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+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
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+      <note>
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+          <octave>5</octave>
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+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
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+      <note>
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+          <step>E</step>
+          <octave>5</octave>
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+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
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+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
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+    <measure number="9">
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+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
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+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
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+      <note>
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+          <step>B</step>
+          <octave>4</octave>
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+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
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+          <step>A</step>
+          <octave>4</octave>
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+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
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+        <beam number="1">continue</beam>
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+          <octave>4</octave>
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+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/001_diatonic_excercises/090-spread-triads.xml b/data/practice/melody/001_diatonic_excercises/090-spread-triads.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/001_diatonic_excercises/090-spread-triads.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="3">
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
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+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
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+          <octave>4</octave>
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+        <beam number="1">begin</beam>
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+        <type>eighth</type>
+        <beam number="1">continue</beam>
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+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
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+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
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+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
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+          <octave>4</octave>
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+        <type>eighth</type>
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+          <octave>4</octave>
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+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
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+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
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+        <beam number="1">begin</beam>
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+          <octave>4</octave>
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+        <type>eighth</type>
+        <beam number="1">continue</beam>
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+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/001_diatonic_excercises/091-spread-triads.xml b/data/practice/melody/001_diatonic_excercises/091-spread-triads.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/001_diatonic_excercises/091-spread-triads.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="3">
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
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+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
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+    <measure number="10">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
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+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
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+          <octave>4</octave>
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+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
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+          <step>C</step>
+          <octave>4</octave>
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+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
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+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
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+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
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+      <note>
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+          <octave>4</octave>
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+        <type>eighth</type>
+        <beam number="1">end</beam>
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+          <step>F</step>
+          <octave>4</octave>
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+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/001_diatonic_excercises/092-quartal-triads.xml b/data/practice/melody/001_diatonic_excercises/092-quartal-triads.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/001_diatonic_excercises/092-quartal-triads.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="3">
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="10">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/001_diatonic_excercises/093-quartal-triads.xml b/data/practice/melody/001_diatonic_excercises/093-quartal-triads.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/001_diatonic_excercises/093-quartal-triads.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="3">
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="10">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/001_diatonic_excercises/094-quartal-triads.xml b/data/practice/melody/001_diatonic_excercises/094-quartal-triads.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/001_diatonic_excercises/094-quartal-triads.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
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+        <beam number="1">continue</beam>
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+        <type>eighth</type>
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+    <measure number="4">
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+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
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+          <step>C</step>
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+        <beam number="1">continue</beam>
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+        <pitch>
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+        <beam number="1">continue</beam>
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+        <duration>4</duration>
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+        <beam number="1">continue</beam>
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+        <pitch>
+          <step>A</step>
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+        <beam number="1">end</beam>
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+        <beam number="1">continue</beam>
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+          <step>C</step>
+          <octave>6</octave>
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+          <octave>6</octave>
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+        <type>eighth</type>
+        <beam number="1">continue</beam>
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+          <octave>6</octave>
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+        <beam number="1">continue</beam>
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+          <step>C</step>
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+        <beam number="1">end</beam>
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+        <beam number="1">begin</beam>
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+          <octave>5</octave>
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+      <note>
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+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
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+        <type>eighth</type>
+        <beam number="1">begin</beam>
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+        <beam number="1">continue</beam>
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+          <step>B</step>
+          <octave>5</octave>
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+        <duration>4</duration>
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+        <beam number="1">continue</beam>
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+        <beam number="1">begin</beam>
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+        <pitch>
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+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
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+          <octave>5</octave>
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+        <type>eighth</type>
+        <beam number="1">continue</beam>
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+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
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+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
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+          <step>F</step>
+          <octave>5</octave>
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+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
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+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
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+        <beam number="1">begin</beam>
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+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="10">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/001_diatonic_excercises/095-quartal-triads.xml b/data/practice/melody/001_diatonic_excercises/095-quartal-triads.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/001_diatonic_excercises/095-quartal-triads.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
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+          <step>E</step>
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+        <beam number="1">end</beam>
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+        <beam number="1">end</beam>
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+          <step>B</step>
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+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
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+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
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+        <beam number="1">end</beam>
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+      <note>
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+          <octave>5</octave>
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+      <note>
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+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
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+      <note>
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+          <step>E</step>
+          <octave>5</octave>
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+        <duration>4</duration>
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+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
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+        <beam number="1">end</beam>
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+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
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+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
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+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
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+        <type>eighth</type>
+        <beam number="1">continue</beam>
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+      <note>
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+          <step>G</step>
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+        <beam number="1">continue</beam>
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+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
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+        <beam number="1">end</beam>
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+    <measure number="5">
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+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
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+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
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+      <note>
+        <pitch>
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+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
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+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
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+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
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+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="10">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/001_diatonic_excercises/096-quartal-triads.xml b/data/practice/melody/001_diatonic_excercises/096-quartal-triads.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/001_diatonic_excercises/096-quartal-triads.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
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+        <pitch>
+          <step>E</step>
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+          <step>F</step>
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+        <beam number="1">continue</beam>
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+        <beam number="1">end</beam>
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+      <note>
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+        <beam number="1">begin</beam>
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+          <step>B</step>
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+        <type>eighth</type>
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+        <beam number="1">continue</beam>
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+          <step>B</step>
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+        <beam number="1">end</beam>
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+    <measure number="3">
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+          <octave>4</octave>
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+          <step>B</step>
+          <octave>4</octave>
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+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
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+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
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+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
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+      <note>
+        <pitch>
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+          <octave>5</octave>
+        </pitch>
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+        <type>eighth</type>
+        <beam number="1">begin</beam>
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+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
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+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
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+        <beam number="1">end</beam>
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+      <note>
+        <pitch>
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+          <octave>5</octave>
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+        <beam number="1">begin</beam>
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+      <note>
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+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
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+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
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+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
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+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="10">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/001_diatonic_excercises/097-quartal-triads.xml b/data/practice/melody/001_diatonic_excercises/097-quartal-triads.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/001_diatonic_excercises/097-quartal-triads.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
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+        <beam number="1">continue</beam>
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+    <measure number="4">
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+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
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+          <octave>4</octave>
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+          <step>C</step>
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+        <beam number="1">continue</beam>
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+        <pitch>
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+          <octave>5</octave>
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+        <duration>4</duration>
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+        <beam number="1">begin</beam>
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+          <step>C</step>
+          <octave>6</octave>
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+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
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+          <step>B</step>
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+        <duration>4</duration>
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+        <beam number="1">continue</beam>
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+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
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+        <beam number="1">end</beam>
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+        <beam number="1">continue</beam>
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+        <beam number="1">continue</beam>
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+          <octave>6</octave>
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+          <octave>6</octave>
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+        <type>eighth</type>
+        <beam number="1">continue</beam>
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+          <octave>6</octave>
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+        <beam number="1">continue</beam>
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+        <pitch>
+          <step>C</step>
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+        <beam number="1">end</beam>
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+          <octave>5</octave>
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+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
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+        <type>eighth</type>
+        <beam number="1">continue</beam>
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+          <step>B</step>
+          <octave>5</octave>
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+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
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+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
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+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
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+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
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+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
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+        <beam number="1">begin</beam>
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+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
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+          <octave>5</octave>
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+        <beam number="1">continue</beam>
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+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
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+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
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+        <type>eighth</type>
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+          <octave>5</octave>
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+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
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+        <beam number="1">end</beam>
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+      <note>
+        <pitch>
+          <step>E</step>
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+        <duration>4</duration>
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+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="10">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/001_diatonic_excercises/098-quartal-triads.xml b/data/practice/melody/001_diatonic_excercises/098-quartal-triads.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/001_diatonic_excercises/098-quartal-triads.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
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+        <beam number="1">continue</beam>
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+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
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+        <beam number="1">continue</beam>
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+        <beam number="1">end</beam>
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+        <beam number="1">begin</beam>
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+          <step>B</step>
+          <octave>4</octave>
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+        <type>eighth</type>
+        <beam number="1">continue</beam>
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+          <octave>5</octave>
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+        <duration>4</duration>
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+        <beam number="1">continue</beam>
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+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
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+    <measure number="3">
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+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="10">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/001_diatonic_excercises/099-quartal-triads.xml b/data/practice/melody/001_diatonic_excercises/099-quartal-triads.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/001_diatonic_excercises/099-quartal-triads.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
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+        <beam number="1">end</beam>
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+          <step>B</step>
+          <octave>4</octave>
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+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
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+        <beam number="1">end</beam>
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+      <note>
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+          <octave>5</octave>
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+        <type>eighth</type>
+        <beam number="1">begin</beam>
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+      <note>
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+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
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+      <note>
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+          <octave>5</octave>
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+        <duration>4</duration>
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+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
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+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
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+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
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+        <beam number="1">end</beam>
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+      <note>
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+          <octave>5</octave>
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+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
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+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="10">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/001_diatonic_excercises/100-quartal-triads.xml b/data/practice/melody/001_diatonic_excercises/100-quartal-triads.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/001_diatonic_excercises/100-quartal-triads.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
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+        <beam number="1">end</beam>
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+          <step>B</step>
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+        <beam number="1">continue</beam>
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+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
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+        <beam number="1">continue</beam>
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+        <pitch>
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+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
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+      <note>
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+          <octave>5</octave>
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+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
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+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
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+        <duration>4</duration>
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+        <beam number="1">begin</beam>
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+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
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+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
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+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
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+        <beam number="1">end</beam>
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+          <octave>5</octave>
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+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
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+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
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+        <type>eighth</type>
+        <beam number="1">end</beam>
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+    </measure>
+    <measure number="5">
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+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
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+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="10">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/001_diatonic_excercises/101-quartal-triads.xml b/data/practice/melody/001_diatonic_excercises/101-quartal-triads.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/001_diatonic_excercises/101-quartal-triads.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="3">
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="10">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/001_diatonic_excercises/102-quartal-triads.xml b/data/practice/melody/001_diatonic_excercises/102-quartal-triads.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/001_diatonic_excercises/102-quartal-triads.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="3">
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
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+          <octave>5</octave>
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+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
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+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
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+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
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+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
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+        <beam number="1">begin</beam>
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+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="10">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/001_diatonic_excercises/103-quartal-triads.xml b/data/practice/melody/001_diatonic_excercises/103-quartal-triads.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/001_diatonic_excercises/103-quartal-triads.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="3">
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
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+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
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+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
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+        <duration>4</duration>
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+        <beam number="1">begin</beam>
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+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
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+        <type>eighth</type>
+        <beam number="1">continue</beam>
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+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
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+        <beam number="1">end</beam>
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+      <note>
+        <pitch>
+          <step>E</step>
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+      <note>
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+          <step>F</step>
+          <octave>5</octave>
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+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="10">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/001_diatonic_excercises/104-quartal-triads.xml b/data/practice/melody/001_diatonic_excercises/104-quartal-triads.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/001_diatonic_excercises/104-quartal-triads.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="3">
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
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+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="10">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/001_diatonic_excercises/105-quartal-triads.xml b/data/practice/melody/001_diatonic_excercises/105-quartal-triads.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/001_diatonic_excercises/105-quartal-triads.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="3">
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="10">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/001_diatonic_excercises/106-quartal-triads.xml b/data/practice/melody/001_diatonic_excercises/106-quartal-triads.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/001_diatonic_excercises/106-quartal-triads.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="3">
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="10">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/001_diatonic_excercises/107-diatonic-interval-variations.xml b/data/practice/melody/001_diatonic_excercises/107-diatonic-interval-variations.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/001_diatonic_excercises/107-diatonic-interval-variations.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="3">
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="10">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/001_diatonic_excercises/108-diatonic-interval-variations.xml b/data/practice/melody/001_diatonic_excercises/108-diatonic-interval-variations.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/001_diatonic_excercises/108-diatonic-interval-variations.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="3">
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="10">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/001_diatonic_excercises/109-diatonic-interval-variations.xml b/data/practice/melody/001_diatonic_excercises/109-diatonic-interval-variations.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/001_diatonic_excercises/109-diatonic-interval-variations.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="3">
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="10">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/001_diatonic_excercises/110-diatonic-interval-variations.xml b/data/practice/melody/001_diatonic_excercises/110-diatonic-interval-variations.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/001_diatonic_excercises/110-diatonic-interval-variations.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="3">
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="10">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/001_diatonic_excercises/111-diatonic-interval-variations.xml b/data/practice/melody/001_diatonic_excercises/111-diatonic-interval-variations.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/001_diatonic_excercises/111-diatonic-interval-variations.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="3">
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="10">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/001_diatonic_excercises/112-diatonic-interval-variations.xml b/data/practice/melody/001_diatonic_excercises/112-diatonic-interval-variations.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/001_diatonic_excercises/112-diatonic-interval-variations.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="3">
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="10">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/001_diatonic_excercises/113-diatonic-interval-variations.xml b/data/practice/melody/001_diatonic_excercises/113-diatonic-interval-variations.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/001_diatonic_excercises/113-diatonic-interval-variations.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="3">
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="10">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/001_diatonic_excercises/114-diatonic-interval-variations.xml b/data/practice/melody/001_diatonic_excercises/114-diatonic-interval-variations.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/001_diatonic_excercises/114-diatonic-interval-variations.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="3">
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="10">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/001_diatonic_excercises/115-diatonic-interval-variations.xml b/data/practice/melody/001_diatonic_excercises/115-diatonic-interval-variations.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/001_diatonic_excercises/115-diatonic-interval-variations.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="3">
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="10">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/001_diatonic_excercises/116-diatonic-interval-variations.xml b/data/practice/melody/001_diatonic_excercises/116-diatonic-interval-variations.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/001_diatonic_excercises/116-diatonic-interval-variations.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="3">
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="10">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/001_diatonic_excercises/117-diatonic-interval-variations.xml b/data/practice/melody/001_diatonic_excercises/117-diatonic-interval-variations.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/001_diatonic_excercises/117-diatonic-interval-variations.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="3">
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="10">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/001_diatonic_excercises/118-diatonic-interval-variations.xml b/data/practice/melody/001_diatonic_excercises/118-diatonic-interval-variations.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/001_diatonic_excercises/118-diatonic-interval-variations.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="3">
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="10">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/001_diatonic_excercises/119-diatonic-interval-variations.xml b/data/practice/melody/001_diatonic_excercises/119-diatonic-interval-variations.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/001_diatonic_excercises/119-diatonic-interval-variations.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="3">
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="10">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/001_diatonic_excercises/120-diatonic-interval-variations.xml b/data/practice/melody/001_diatonic_excercises/120-diatonic-interval-variations.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/001_diatonic_excercises/120-diatonic-interval-variations.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="3">
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="10">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/001_diatonic_excercises/121-diatonic-7th-chords.xml b/data/practice/melody/001_diatonic_excercises/121-diatonic-7th-chords.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/001_diatonic_excercises/121-diatonic-7th-chords.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="3">
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
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+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="10">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/001_diatonic_excercises/122-diatonic-7th-chords.xml b/data/practice/melody/001_diatonic_excercises/122-diatonic-7th-chords.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/001_diatonic_excercises/122-diatonic-7th-chords.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="3">
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="10">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/001_diatonic_excercises/123-diatonic-7th-chords.xml b/data/practice/melody/001_diatonic_excercises/123-diatonic-7th-chords.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/001_diatonic_excercises/123-diatonic-7th-chords.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="3">
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
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+          <octave>4</octave>
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+        <beam number="1">continue</beam>
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+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
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+          <octave>4</octave>
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+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
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+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/001_diatonic_excercises/124-diatonic-7th-chords.xml b/data/practice/melody/001_diatonic_excercises/124-diatonic-7th-chords.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/001_diatonic_excercises/124-diatonic-7th-chords.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="3">
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
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+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
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+    <measure number="10">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/001_diatonic_excercises/125-diatonic-7th-chords.xml b/data/practice/melody/001_diatonic_excercises/125-diatonic-7th-chords.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/001_diatonic_excercises/125-diatonic-7th-chords.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="3">
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
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+          <octave>4</octave>
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+        <duration>4</duration>
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+        <beam number="1">begin</beam>
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+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
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+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
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+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
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+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
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+        <pitch>
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+          <octave>4</octave>
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+        <duration>4</duration>
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+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
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+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
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+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
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+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/001_diatonic_excercises/126-diatonic-7th-chords.xml b/data/practice/melody/001_diatonic_excercises/126-diatonic-7th-chords.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/001_diatonic_excercises/126-diatonic-7th-chords.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="3">
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
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+      <note>
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+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
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+          <step>G</step>
+          <octave>4</octave>
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+        <duration>4</duration>
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+        <beam number="1">end</beam>
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+        <beam number="1">continue</beam>
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+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
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+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
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+          <octave>4</octave>
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+        <duration>4</duration>
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+          <octave>4</octave>
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+        <type>eighth</type>
+        <beam number="1">continue</beam>
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+          <octave>4</octave>
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+        <duration>4</duration>
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+        <beam number="1">continue</beam>
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+        <type>eighth</type>
+        <beam number="1">continue</beam>
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+          <octave>4</octave>
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+        <beam number="1">continue</beam>
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+          <octave>4</octave>
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+        <duration>32</duration>
+        <type>whole</type>
+      </note>
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+  </part>
+</score-partwise>
diff --git a/data/practice/melody/001_diatonic_excercises/127-diatonic-7th-chords.xml b/data/practice/melody/001_diatonic_excercises/127-diatonic-7th-chords.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/001_diatonic_excercises/127-diatonic-7th-chords.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
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+        <duration>4</duration>
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+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
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+          <octave>4</octave>
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+        <type>eighth</type>
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+      </note>
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+          <step>E</step>
+          <octave>4</octave>
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+        <duration>4</duration>
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+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
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+      <note>
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+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
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+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
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+        <duration>4</duration>
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+        <beam number="1">continue</beam>
+      </note>
+      <note>
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+          <step>C</step>
+          <octave>5</octave>
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+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
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+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="3">
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
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+        <duration>4</duration>
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+        <beam number="1">continue</beam>
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+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
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+        <type>eighth</type>
+        <beam number="1">end</beam>
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+          <octave>5</octave>
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+          <octave>5</octave>
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+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
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+          <octave>5</octave>
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+        <duration>4</duration>
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+      </note>
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+        <beam number="1">end</beam>
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+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
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+        <duration>4</duration>
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+          <octave>4</octave>
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+        <duration>4</duration>
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+        <beam number="1">continue</beam>
+      </note>
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+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
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+          <octave>5</octave>
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+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
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+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
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+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
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+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="10">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
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+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/002_the_pentatonic_scale/001-the-pentatonic-scales.xml b/data/practice/melody/002_the_pentatonic_scale/001-the-pentatonic-scales.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/002_the_pentatonic_scale/001-the-pentatonic-scales.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="3">
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="10">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/002_the_pentatonic_scale/002-the-pentatonic-scales.xml b/data/practice/melody/002_the_pentatonic_scale/002-the-pentatonic-scales.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/002_the_pentatonic_scale/002-the-pentatonic-scales.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="3">
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="10">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/002_the_pentatonic_scale/003-the-pentatonic-scales.xml b/data/practice/melody/002_the_pentatonic_scale/003-the-pentatonic-scales.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/002_the_pentatonic_scale/003-the-pentatonic-scales.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="3">
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="10">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/002_the_pentatonic_scale/004-the-pentatonic-scales.xml b/data/practice/melody/002_the_pentatonic_scale/004-the-pentatonic-scales.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/002_the_pentatonic_scale/004-the-pentatonic-scales.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="3">
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="10">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/002_the_pentatonic_scale/005-the-pentatonic-scales.xml b/data/practice/melody/002_the_pentatonic_scale/005-the-pentatonic-scales.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/002_the_pentatonic_scale/005-the-pentatonic-scales.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="3">
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="10">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/002_the_pentatonic_scale/006-the-pentatonic-scales.xml b/data/practice/melody/002_the_pentatonic_scale/006-the-pentatonic-scales.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/002_the_pentatonic_scale/006-the-pentatonic-scales.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="3">
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="10">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/002_the_pentatonic_scale/007-the-pentatonic-scales.xml b/data/practice/melody/002_the_pentatonic_scale/007-the-pentatonic-scales.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/002_the_pentatonic_scale/007-the-pentatonic-scales.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="3">
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="10">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/002_the_pentatonic_scale/008-the-pentatonic-scales.xml b/data/practice/melody/002_the_pentatonic_scale/008-the-pentatonic-scales.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/002_the_pentatonic_scale/008-the-pentatonic-scales.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="3">
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="10">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/002_the_pentatonic_scale/009-the-pentatonic-scales.xml b/data/practice/melody/002_the_pentatonic_scale/009-the-pentatonic-scales.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/002_the_pentatonic_scale/009-the-pentatonic-scales.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="3">
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="10">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/002_the_pentatonic_scale/010-the-pentatonic-scales.xml b/data/practice/melody/002_the_pentatonic_scale/010-the-pentatonic-scales.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/002_the_pentatonic_scale/010-the-pentatonic-scales.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="3">
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="10">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/002_the_pentatonic_scale/011-the-pentatonic-scales.xml b/data/practice/melody/002_the_pentatonic_scale/011-the-pentatonic-scales.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/002_the_pentatonic_scale/011-the-pentatonic-scales.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="3">
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="10">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/002_the_pentatonic_scale/012-the-pentatonic-scales.xml b/data/practice/melody/002_the_pentatonic_scale/012-the-pentatonic-scales.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/002_the_pentatonic_scale/012-the-pentatonic-scales.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="3">
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="10">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/002_the_pentatonic_scale/013-the-pentatonic-scales.xml b/data/practice/melody/002_the_pentatonic_scale/013-the-pentatonic-scales.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/002_the_pentatonic_scale/013-the-pentatonic-scales.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="3">
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="10">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>
diff --git a/data/practice/melody/002_the_pentatonic_scale/014-the-pentatonic-scales.xml b/data/practice/melody/002_the_pentatonic_scale/014-the-pentatonic-scales.xml
new file mode 100644
index 0000000..66fa726
--- /dev/null
+++ b/data/practice/melody/002_the_pentatonic_scale/014-the-pentatonic-scales.xml
@@ -0,0 +1,785 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="4.0">
+  <identification>
+    <encoding>
+      <supports element="accidental" type="yes"/>
+      <supports element="transpose" type="yes"/>
+      <software>Soundslice MusicXML exporter</software>
+      <encoding-date>2026-09-14</encoding-date>
+    </encoding>
+  </identification>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Vocal</part-name>
+    </score-part>
+  </part-list>
+  <part id="P1">
+    <measure number="1">
+      <attributes>
+        <divisions>8</divisions>
+        <key>
+          <fifths>0</fifths>
+          <mode>major</mode>
+        </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+        </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+        </clef>
+      </attributes>
+      <sound tempo="120"/>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="2">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="3">
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="4">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="5">
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="6">
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>6</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="7">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="8">
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="9">
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="10">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>B</step>
+          <octave>3</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">begin</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>C</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>D</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">continue</beam>
+      </note>
+      <note>
+        <pitch>
+          <step>E</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>4</duration>
+        <type>eighth</type>
+        <beam number="1">end</beam>
+      </note>
+    </measure>
+    <measure number="11">
+      <note>
+        <pitch>
+          <step>F</step>
+          <octave>4</octave>
+        </pitch>
+        <duration>32</duration>
+        <type>whole</type>
+      </note>
+    </measure>
+  </part>
+</score-partwise>