{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "schema:MusicGroup",
  "title": "MusicGroup",
  "description": "A musical group, such as a band, an orchestra, or a choir. Can also be a solo musician.",
  "type": "object",
  "allOf": [
    {
      "description": "A performance group, such as a band, an orchestra, or a circus.",
      "$ref": "schema:PerformingGroup"
    }
  ],
  "properties": {
    "album": {
      "description": "A music album.",
      "oneOf": [
        { "$ref": "schema:MusicAlbum" },
        { "type": "array", "items": { "$ref": "schema:MusicAlbum" } }
      ]
    },
    "albums": {
      "description": "A collection of music albums.",
      "oneOf": [
        { "$ref": "schema:MusicAlbum" },
        { "type": "array", "items": { "$ref": "schema:MusicAlbum" } }
      ]
    },
    "genre": {
      "description": "Genre of the creative work, broadcast channel or group.",
      "anyOf": [{ "type": "string", "format": "uri" }, { "type": "string" }]
    },
    "musicGroupMember": {
      "description": "A member of a music group—for example, John, Paul, George, or Ringo.",
      "oneOf": [
        { "$ref": "schema:Person" },
        { "type": "array", "items": { "$ref": "schema:Person" } }
      ]
    },
    "track": {
      "description": "A music recording (track)—usually a single song. If an ItemList is given, the list should contain items of type MusicRecording.",
      "oneOf": [
        {
          "anyOf": [
            { "$ref": "schema:ItemList" },
            { "$ref": "schema:MusicRecording" }
          ]
        },
        {
          "type": "array",
          "items": {
            "anyOf": [
              { "$ref": "schema:ItemList" },
              { "$ref": "schema:MusicRecording" }
            ]
          }
        }
      ]
    },
    "tracks": {
      "description": "A music recording (track)—usually a single song.",
      "oneOf": [
        { "$ref": "schema:MusicRecording" },
        { "type": "array", "items": { "$ref": "schema:MusicRecording" } }
      ]
    }
  }
}