A free program for Android, by Gismart.

Loop Maker Pro – Music Maker is an easy-to-use music maker app for everyone to use, no matter if you are a beginner or an expert. It offers an extremely simple interface with no complicated menus or screens. Simply start the app, select a song from your device, and start tapping the pad to create your own music.

You can create and mix any type of music and sound, from your own songs to the best DJ remixes. You can add multiple beats to the song to make it more interesting. And if you want to get more professional, you can add effects such as reverb and compression.