---
title: instrumentID
framework: avfaudio
role: symbol
role_heading: Instance Property
path: avfaudio/avextendednoteonevent/instrumentid
---

# instrumentID

The instrument identifier.

## Declaration

```swift
var instrumentID: UInt32 { get set }
```

## Discussion

Discussion Set this value to defaultInstrument.

## See Also

### Configuring a Note On Event

- [midiNote](avfaudio/avextendednoteonevent/midinote.md)
- [velocity](avfaudio/avextendednoteonevent/velocity.md)
- [groupID](avfaudio/avextendednoteonevent/groupid.md)
- [duration](avfaudio/avextendednoteonevent/duration.md)