---
title: keySignature
framework: avfaudio
role: symbol
role_heading: Type Property
path: avfaudio/avaudiosequencer/infodictionarykey/keysignature
---

# keySignature

A key that represents the key signature.

## Declaration

```swift
static let keySignature: AVAudioSequencer.InfoDictionaryKey
```

## See Also

### Getting Encoding Information

- [encodingApplication](avfaudio/avaudiosequencer/infodictionarykey/encodingapplication.md)
- [sourceEncoder](avfaudio/avaudiosequencer/infodictionarykey/sourceencoder.md)
- [nominalBitRate](avfaudio/avaudiosequencer/infodictionarykey/nominalbitrate.md)
- [sourceBitDepth](avfaudio/avaudiosequencer/infodictionarykey/sourcebitdepth.md)