composer The composer of the song or audio composition that the audio file contains. Declarationvar composer: String? { get set } See AlsoDescribing musicalbumartistaudioChannelCountaudioEncodingApplicationaudioSampleRateaudioTrackNumberkeySignaturelyricistmusicalGenrerecordingDatetempotimeSignaturegeneralMIDISequencemusicalInstrumentCategorymusicalInstrumentName