# Replicating On Beat and On Bar callbacks

**URL:** <https://qa.fmod.com/t/replicating-on-beat-and-on-bar-callbacks/11407>\
**Category:** FMOD Studio\
**Created:** [April 23, 2014, 1:26pm UTC](https://qa.fmod.com/t/replicating-on-beat-and-on-bar-callbacks/11407 "2014-04-23T13:26:53Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![HyperNexus](https://avatars.discourse-cdn.com/v4/letter/h/91b2a8/32.png) [@HyperNexus](https://qa.fmod.com/u/HyperNexus)\
**Post date:** [April 23, 2014, 1:26pm UTC](https://qa.fmod.com/t/replicating-on-beat-and-on-bar-callbacks/11407/1 "2014-04-23T13:26:53Z")

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Hi,

I’m moving across from the FMOD Designer API to FMOD Studio. One of the handy parts of the FMOD Designer API was the on beat and on bar callbacks supported within the MusicSystem class. This class has been removed from the FMOD Studio API with the documentation stating that the functionality of the class can be supported through the Event Editor in FMOD Studio.

I was hoping someone could explain the best way to approach this.

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**Author:** ![joseph](https://yyz2.discourse-cdn.com/flex036/user_avatar/qa.fmod.com/joseph/32/264_2.png) [@joseph](https://qa.fmod.com/u/joseph)\
**Post date:** [April 24, 2014, 1:31am UTC](https://qa.fmod.com/t/replicating-on-beat-and-on-bar-callbacks/11407/2 "2014-04-24T01:31:32Z")

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You might want to search for and read the sections of the Studio manual entitled “Transition Region Quantisation,” and “Defining Trigger Behaviour.” If, after reading those sections, you have more specific questions, either post them here or (if you’d prefer quicker turnaround) send them to [support@fmod.org](mailto:support@fmod.org).