{
  "type": "object",
  "properties": {
    "title": {"type": "string"},
    "tempo_bpm": {"type": "number", "minimum": 30, "maximum": 180},
    "notes": {
      "type": "array",
      "minItems": 1,
      "maxItems": 256,
      "items": {
        "type": "object",
        "properties": {
          "midi": {"type": "integer", "minimum": 21, "maximum": 108},
          "start_beat": {"type": "number", "minimum": 0, "maximum": 128},
          "duration_beats": {"type": "number", "minimum": 0.05, "maximum": 8},
          "hand": {"type": "string", "enum": ["left", "right"]}
        },
        "required": ["midi", "start_beat", "duration_beats", "hand"],
        "additionalProperties": false
      }
    }
  },
  "required": ["title", "tempo_bpm", "notes"],
  "additionalProperties": false
}