The name of an instrument within the context of an instrument category.
- iOS 9.0+
- macOS 10.13+
- Mac Catalyst 13.0+
For some instrument categories, such as Percussion and Keyboards, you can specify an instrument name.
The title for a collection of audio media.
The artist associated with the media.
The sample rate of the audio data contained in the file as a float value representing HZ (that is, audio frames/second), such as 44100.0 or 22254.54.
The track number of a song or audio composition when it is part of an album.
The composer of the song or audio composition contained in the audio file.
The musical key of the song or audio composition contained in the file, such as C, Dm, or F#m.
The lyricist or text writer for the song or audio composition contained in the file.
The musical genre of the song or audio composition contained in the file, such as Jazz, Pop, Rock, or Classical.
The recording date of the song or audio composition.
The tempo of the music contained in the audio file in beats per minute.
The time signature of the musical composition contained in the audio or MIDI file in a string, such as "4/4" or "7/8".
A value that indicates whether the MIDI sequence contained in the file is set up for use with a general MIDI device.