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# NewMusicSequence(_:)

Creates a new empty music sequence.

```
func NewMusicSequence(_ outSequence: UnsafeMutablePointer<MusicSequence?>) -> OSStatus
```

## Parameters

`outSequence`

On output, the new, empty music sequence.

## Return Value

A result code.

## Discussion

A new music sequence has only a tempo track, with a default tempo of 120 beats-per-minute. The default sequence type is beat-based. For the various sequence types, see [`MusicSequenceType`](/documentation/AudioToolbox/MusicSequenceType).

To direct the output of a music sequence to an audio processing graph, use the [`MusicSequenceSetAUGraph(_:_:)`](/documentation/AudioToolbox/MusicSequenceSetAUGraph(_:_:)) function. To direct the output instead to a MIDI endpoint, use the [`MusicSequenceSetMIDIEndpoint(_:_:)`](/documentation/AudioToolbox/MusicSequenceSetMIDIEndpoint(_:_:)) function.

To direct the output of a specific music track, use the [`MusicTrackSetDestNode(_:_:)`](/documentation/AudioToolbox/MusicTrackSetDestNode(_:_:)) and [`MusicTrackSetDestMIDIEndpoint(_:_:)`](/documentation/AudioToolbox/MusicTrackSetDestMIDIEndpoint(_:_:)) functions, described in `MusicTrack`.

---

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