---
title: "MusicTrackSetProperty(_:_:_:_:)"
framework: audiotoolbox
role: symbol
role_heading: Function
path: "audiotoolbox/musictracksetproperty(_:_:_:_:)"
---

# MusicTrackSetProperty(_:_:_:_:)

Sets a music track property value.

## Declaration

```swift
func MusicTrackSetProperty(_ inTrack: MusicTrack, _ inPropertyID: UInt32, _ inData: UnsafeMutableRawPointer, _ inLength: UInt32) -> OSStatus
```

## Parameters

- `inTrack`: The music track that you want to set a property value for.
- `inPropertyID`: The identifier for the music track property that you want to set. See doc://com.apple.audiotoolbox/documentation/AudioToolbox/1515456-music-track-properties for possible values.
- `inData`: The new property value.
- `inLength`: The size of the new property value.

## Return Value

Return Value A result code.

## Discussion

Discussion Music track property values are always accessed by reference.

## See Also

### Managing Music Tracks

- [MusicTrackClear(_:_:_:)](audiotoolbox/musictrackclear(_:_:_:).md)
- [MusicTrackCopyInsert(_:_:_:_:_:)](audiotoolbox/musictrackcopyinsert(_:_:_:_:_:).md)
- [MusicTrackCut(_:_:_:)](audiotoolbox/musictrackcut(_:_:_:).md)
- [MusicTrackGetDestMIDIEndpoint(_:_:)](audiotoolbox/musictrackgetdestmidiendpoint(_:_:).md)
- [MusicTrackGetDestNode(_:_:)](audiotoolbox/musictrackgetdestnode(_:_:).md)
- [MusicTrackGetProperty(_:_:_:_:)](audiotoolbox/musictrackgetproperty(_:_:_:_:).md)
- [MusicTrackGetSequence(_:_:)](audiotoolbox/musictrackgetsequence(_:_:).md)
- [MusicTrackMerge(_:_:_:_:_:)](audiotoolbox/musictrackmerge(_:_:_:_:_:).md)
- [MusicTrackMoveEvents(_:_:_:_:)](audiotoolbox/musictrackmoveevents(_:_:_:_:).md)
- [MusicTrackNewAUPresetEvent(_:_:_:)](audiotoolbox/musictracknewaupresetevent(_:_:_:).md)
- [MusicTrackNewExtendedNoteEvent(_:_:_:)](audiotoolbox/musictracknewextendednoteevent(_:_:_:).md)
- [MusicTrackNewExtendedTempoEvent(_:_:_:)](audiotoolbox/musictracknewextendedtempoevent(_:_:_:).md)
- [MusicTrackNewMIDIChannelEvent(_:_:_:)](audiotoolbox/musictracknewmidichannelevent(_:_:_:).md)
- [MusicTrackNewMIDINoteEvent(_:_:_:)](audiotoolbox/musictracknewmidinoteevent(_:_:_:).md)
- [MusicTrackNewMIDIRawDataEvent(_:_:_:)](audiotoolbox/musictracknewmidirawdataevent(_:_:_:).md)