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product-vamp/docs/composer/musical_capability_matrix.md
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Capabilities and release limits

Behavior Current status
Ordinary scale motion, rests and held chord tones Enumerable and validated
Complete scalar/scale-third groups Reachable; exact scale indices, whole rhythm groups
Actual chord arpeggios Successive written basic chord members, distinct from scale thirds
Heard-theme return and inverted answer Constructors and synthetic reachability retained; a long expressive home may have no legal literal adaptation. No required count
Approaches, enclosures, prepared chromatic connections Reachable joint actions; target, time and register validated
Anticipation with hold or deliberate reattack Reachable and separately validated
Stable/resolving colors and anticipated colors Reachable; complete sounding exposure checked
Delayed semitone resolution Pending across actions; exact target and bounded deadline required
Prepared suspension and named blues inflection Validators retained; no dedicated new action constructor yet
Optional full head quotation No new constructor; source influence currently uses ordered interval relationships and rhythm evidence
Multiple complete histories Active bounded common-time search; controlled locally-cheaper-opening counterfactual passes
Home identity Completed opening candidate retained separately from recent-note retrieval context
Two-sided join revision No edit/rewrite pass in this selector repair
All six strings, frets 1–12, no opens Shared physical domain and whole-line fingering
Source-only independent accompaniment Existing canonical sparse comping retained
Exact construction coverage for all four targets Demonstrated by constrained derivation plus final harmonic validation; not a production winner
Exact unrestricted reproduction of all four targets Not achieved; all four lose complete-duration-compatible openings at the first successor cutoff, and the full default exports fail exact comparison
Shared development learning Complete-output constraints, bounded integer coefficients, accumulated compatible counterexamples and limited contextual-rule schema; a first four-example fit separated saved negatives but did not establish reproduction
Training-independent knowledge Not claimed: approved fitting/induction depends explicitly on the examples

A complete route is indivisible, but many independent single attacks remain available. This flexibility removes former coverage restrictions without proving melodic coherence. Source relationships are richer than an unordered interval set but remain a limited identity model. Register and fingering are separate; TAB legality is not biomechanical certification.

Unsupported written chords still fail explicitly. No source harmony is manufactured from a target. Electric may continue over the returning vocal pickup under the latest authorized allocation; vocal timing is unchanged. No dynamics, velocity shaping or new playback feel was introduced.