A free program for Android, by Jingmao Tec.
The gameplay is simple: tap the screen to the beat of the music and try to match the notes with the ones that are already on the screen. The notes will appear in different positions, so you have to be able to recognize the pattern and tap the correct notes.
There are many different songs that you can play, and the game is designed to be fun and enjoyable for everyone. It is easy to play, but there is a challenge in each song. The difficulty increases as you play more songs, so choose the one that is the most suitable for you.