A free program for Android, by I-Inferno.

When you’re bored or just want to kill time, The MUSYNX is a fantastic application to try. You can immerse yourself in it for hours because it is straightforward yet exciting. The game’s rules are straightforward; to succeed, you simply need to tap on the incoming tiles with the proper rhythm and timing. You can play a variety of music or beats that are available in this game. Don’t let the simplicity fool you, though; the level of difficulty actually rises as you go along. Take in the beautiful graphics of this game and let each touch release musical sounds.