---
title: head
framework: audiotoolbox
role: symbol
role_heading: Instance Property
path: audiotoolbox/aurenderevent/head
---

# head

Use this field to determine the event type.

## Declaration

```swift
var head: AURenderEventHeader { get set }
```

## See Also

### Instance Properties

- [MIDI](audiotoolbox/aurenderevent/midi.md)
- [parameter](audiotoolbox/aurenderevent/parameter.md)
- [MIDIEventsList](audiotoolbox/aurenderevent/midieventslist.md)