I was thinking about making the rhythm game for this game jam and wanted to check out how other devs did this. This one is definitely a great idea, pleasant look and feel. I like it! It makes you want to play more. Add more content and release it on mobile :D
One thing: I am not sure if it is a bug, or if something is wrong with my setup, but sometimes game counts that I missed the beat without any reason. Is there a problem with synchronization or I am so bad? xD