---
title: prepareToPlay()
framework: avfaudio
role: symbol
role_heading: Instance Method
path: avfaudio/avaudiosequencer/preparetoplay()
---

# prepareToPlay()

Gets ready to play the sequence by prerolling all events.

## Declaration

```swift
func prepareToPlay()
```

## Discussion

Discussion The framework invokes this method automatically on play if you don’t call it, but it may delay startup.

## See Also

### Operating an Audio Sequencer

- [start()](avfaudio/avaudiosequencer/start().md)
- [stop()](avfaudio/avaudiosequencer/stop().md)