# AVMusicEventEnumerationBlock A type you use to enumerate and remove music events, if necessary. ``` typealias AVMusicEventEnumerationBlock = (AVMusicEvent, UnsafeMutablePointer, UnsafeMutablePointer) -> Void ``` ## Parameters `event` The music event the block returns. `timeStamp` The beat position of the event in the music track. `removeEvent` A value that determines whether to remove the event from the track. ## Discussion You use this type when you use [`enumerateEvents(in:using:)`](/documentation/AVFAudio/AVMusicTrack/enumerateEvents(in:using:)). If you modify `event` or `timeStamp`, you change the corresponding value in the track event. --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)