---
title: "MusicSequenceGetTrackIndex(_:_:_:)"
framework: audiotoolbox
role: symbol
role_heading: Function
path: "audiotoolbox/musicsequencegettrackindex(_:_:_:)"
---

# MusicSequenceGetTrackIndex(_:_:_:)

Gets the index number for a specified music track.

## Declaration

```swift
func MusicSequenceGetTrackIndex(_ inSequence: MusicSequence, _ inTrack: MusicTrack, _ outTrackIndex: UnsafeMutablePointer<UInt32>) -> OSStatus
```

## Parameters

- `inSequence`: The music sequence to obtain the track index number from.
- `inTrack`: The music track whose index you want to obtain. This function returns an error if the music track is not part of the music sequence specified in the inSequence parameter.
- `outTrackIndex`: On output, the zero-based index of the music track that you provided in the inTrack parameter.

## Return Value

Return Value A result code.

## Discussion

Discussion This function is for accessing only indexes for music tracks, not the tempo track.

## See Also

### Managing Music Sequences

- [NewMusicSequence(_:)](audiotoolbox/newmusicsequence(_:).md)
- [DisposeMusicSequence(_:)](audiotoolbox/disposemusicsequence(_:).md)
- [MusicSequenceBarBeatTimeToBeats(_:_:_:)](audiotoolbox/musicsequencebarbeattimetobeats(_:_:_:).md)
- [MusicSequenceBeatsToBarBeatTime(_:_:_:_:)](audiotoolbox/musicsequencebeatstobarbeattime(_:_:_:_:).md)
- [MusicSequenceDisposeTrack(_:_:)](audiotoolbox/musicsequencedisposetrack(_:_:).md)
- [MusicSequenceFileCreate(_:_:_:_:_:)](audiotoolbox/musicsequencefilecreate(_:_:_:_:_:).md)
- [MusicSequenceFileCreateData(_:_:_:_:_:)](audiotoolbox/musicsequencefilecreatedata(_:_:_:_:_:).md)
- [MusicSequenceFileLoad(_:_:_:_:)](audiotoolbox/musicsequencefileload(_:_:_:_:).md)
- [MusicSequenceFileLoadData(_:_:_:_:)](audiotoolbox/musicsequencefileloaddata(_:_:_:_:).md)
- [MusicSequenceGetAUGraph(_:_:)](audiotoolbox/musicsequencegetaugraph(_:_:).md)
- [MusicSequenceGetBeatsForSeconds(_:_:_:)](audiotoolbox/musicsequencegetbeatsforseconds(_:_:_:).md)
- [MusicSequenceGetIndTrack(_:_:_:)](audiotoolbox/musicsequencegetindtrack(_:_:_:).md)
- [MusicSequenceGetInfoDictionary(_:)](audiotoolbox/musicsequencegetinfodictionary(_:).md)
- [MusicSequenceGetSMPTEResolution(_:_:_:)](audiotoolbox/musicsequencegetsmpteresolution(_:_:_:).md)
- [MusicSequenceGetSecondsForBeats(_:_:_:)](audiotoolbox/musicsequencegetsecondsforbeats(_:_:_:).md)