{
  "version": 1,
  "provenance": "Independently authored general composition policy; no validation-score measurements or material.",
  "license": "MIT",
  "roles": {
    "acoustic_solo": {
      "seed": "acoustic",
      "preferred_features": [
        "rhythmic_seed",
        "opening_fragment",
        "characteristic_interval",
        "contour_seed"
      ],
      "register_center": 57,
      "register_alternatives": [
        -7,
        0,
        7
      ]
    },
    "electric_solo": {
      "seed": "electric",
      "preferred_features": [
        "characteristic_interval",
        "contour_seed",
        "rhythmic_seed",
        "opening_fragment"
      ],
      "register_center": 62,
      "register_alternatives": [
        -7,
        0,
        7
      ]
    },
    "acoustic_accompaniment": {
      "seed": "acoustic_comp",
      "bass": "primary",
      "center": 53
    },
    "electric_accompaniment": {
      "seed": "electric_comp",
      "bass": "essential",
      "center": 60
    },
    "electric_melody": {
      "seed": "head"
    },
    "vocal_melody": {
      "seed": "voice"
    }
  },
  "difficulty": {
    "name": "moderate",
    "triplet_max_bpm": 160,
    "sixteenth_max_bpm": 112,
    "burst_attacks": 4
  }
}