A free program for Android, by Real drums.

Electronic Drums is a percussion set perfectly fitted both for beginning musicians, who spend hours practicing the easiest beats, and for professionals working on their new songs. Easy to use and set up, yet high-quality audio recording with an optimized sound engine that gives you excellent flexibility over your drum sounds. It’s a great tool for beginning musicians, but also it can be used by anyone who wants to play drums without purchasing expensive equipment and learning how to play properly. Most importantly, it is a virtual drum kit containing 51 realistic sounds recorded in a professional studio. It lets you practice your drumming skills without the noise and vibration of a real drum set.