{
  "duration_seconds": 85,
  "pitch_system": {
    "encoding": "ratio",
    "reference_hz": 220,
    "pitches": [
      1.0,
      1.125,
      1.266,
      1.333,
      1.5,
      1.688,
      1.898,
      2.0,
      2.25,
      2.531,
      2.667,
      3.0,
      3.375,
      3.797
    ],
    "octave_repeats": true,
    "inflection_rules": [
      {
        "pitch_index": 0,
        "inflection_cents_range": [
          -35,
          0
        ],
        "direction": "up"
      },
      {
        "pitch_index": 2,
        "inflection_cents_range": [
          -35,
          0
        ],
        "direction": "up"
      },
      {
        "pitch_index": 4,
        "inflection_cents_range": [
          -35,
          0
        ],
        "direction": "up"
      },
      {
        "pitch_index": 7,
        "inflection_cents_range": [
          -35,
          0
        ],
        "direction": "up"
      },
      {
        "pitch_index": 9,
        "inflection_cents_range": [
          -35,
          0
        ],
        "direction": "up"
      },
      {
        "pitch_index": 11,
        "inflection_cents_range": [
          -35,
          0
        ],
        "direction": "up"
      }
    ]
  },
  "rhythm_system": {
    "type": "cyclical_nonmetric",
    "cycle_duration_seconds": 14,
    "event_density_per_cycle": 12,
    "cycle_count": 6
  },
  "voices": [
    {
      "name": "theme_flute",
      "timbre": "bamboo_flute",
      "pitch_indices": [
        5,
        6,
        7,
        8,
        9,
        10,
        11,
        12
      ],
      "rhythm_role": "melodic_lead",
      "amplitude": 0.75,
      "spatial_position": [
        0.0,
        0.3
      ]
    },
    {
      "name": "variation_gut",
      "timbre": "plucked_gut",
      "pitch_indices": [
        2,
        3,
        4,
        5,
        6,
        7,
        8,
        9
      ],
      "rhythm_role": "ornamental",
      "amplitude": 0.55,
      "spatial_position": [
        -0.4,
        -0.1
      ]
    },
    {
      "name": "drone_pad",
      "timbre": "soft_pad",
      "pitch_indices": [
        0
      ],
      "rhythm_role": "sustained_drone",
      "amplitude": 0.38,
      "spatial_position": [
        0.0,
        -0.2
      ]
    },
    {
      "name": "env_striker",
      "timbre": "low_wood",
      "pitch_indices": [
        0,
        4
      ],
      "rhythm_role": "percussive",
      "amplitude": 0.45,
      "spatial_position": [
        0.5,
        0.0
      ]
    }
  ],
  "form": {
    "arc_type": "arc_buildup",
    "sections": [
      {
        "name": "theme_statement",
        "start_seconds": 0,
        "duration_seconds": 14,
        "character": "plain theme on flute over drone"
      },
      {
        "name": "variation_1_ornamented",
        "start_seconds": 14,
        "duration_seconds": 15,
        "character": "flute ornaments theme; gut begins tracing"
      },
      {
        "name": "variation_2_interleaved",
        "start_seconds": 29,
        "duration_seconds": 14,
        "character": "flute and gut interleave the theme"
      },
      {
        "name": "variation_3_dense",
        "start_seconds": 43,
        "duration_seconds": 14,
        "character": "peak density; env-striker emphasizes coincidences"
      },
      {
        "name": "variation_4_receding",
        "start_seconds": 57,
        "duration_seconds": 14,
        "character": "variation simplifies; gut voice withdraws"
      },
      {
        "name": "theme_return",
        "start_seconds": 71,
        "duration_seconds": 14,
        "character": "plain theme returns, flute alone over drone"
      }
    ]
  },
  "ornamentation": {
    "density": 0.75,
    "rule": "Every sustained note begins 30-50 cents below its target pitch and slides up over 100-200 ms. Flute may add upward grace-notes on tonic and fifth."
  }
}