Gets the tempo track for a music sequence.
- iOS 5.0+
- macOS 10.1+
- Mac Catalyst 13.0+
- tvOS 9.0+
The music sequence whose tempo track you want to obtain.
On output, the tempo track.
A result code.
Each music sequence has a single tempo track. All tempo events are placed into this track, as well as some other events—such as the time signature from a MIDI file. The tempo track, once retrieved, can be edited and iterated over as can a music track. Most non-tempo events in a tempo track are ignored.