A free program for Android, by XME Inc..

Worship Backing Tracks is an Android app that makes it easier for you to create, edit and share your own praise and worship music. You can record multiple tracks and save them for later use. You can also edit them to change the pitch or speed, add backing vocals and change the tempo. All of this makes it easier for you to create the kind of music that you want to. You can also add multiple instruments, like a piano or a guitar, and you can record all of them on one track. This makes it easier for you to mix all of the instruments together to create a new song.

The app has a built-in sound editor, which lets you add multiple instruments to one track and mix them together. This makes it easy to create music with multiple instruments, like a song with a guitar and a piano.