GMSync

GMSync is the easiest way to sync elements of your game to music. Want to make the background pulse with the beat? Making a rhythm game? This is the way to do it.

This library provides a no-brainer approach to perfect music syncing in GMS 2.3+. It allows you to specify music note lengths to sync to, and works directly with track positions. It will never de-sync due to frame rate stutters or moving the window around.

 GMSync uses pure GML, making it fully portable and easy to tweak.

View the online documentation here