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{
  "type": "object",
  "properties": {
    "notes": {
      "type": "array",
      "description": "Notes in order — names like \"C4\" or MIDI numbers. Nest an array to play a chord.",
      "items": {}
    },
    "chord": {
      "type": "string",
      "description": "Play a chord symbol, e.g. \"Fmaj7\"."
    },
    "scale": {
      "type": "string",
      "description": "Play a scale, e.g. \"major\". Needs \"root\"."
    },
    "root": {
      "type": "string",
      "description": "Root note for a scale."
    },
    "octave": {
      "type": "integer",
      "description": "Octave. Middle C is octave 4."
    },
    "together": {
      "type": "boolean",
      "description": "Play all the notes at once as a chord rather than in sequence."
    },
    "beats": {
      "type": "number",
      "description": "Beats per note. Default 1. Use 0.5 for eighth notes."
    },
    "tempo": {
      "type": "integer",
      "description": "Set the tempo before playing."
    },
    "loop": {
      "type": "boolean",
      "description": "Repeat until stopped. Good for a groove to play along to."
    },
    "count_in": {
      "type": "integer",
      "description": "Metronome beats before starting. Use 4 when they will play along."
    }
  }
}