One of the best music apps!

Great sequencer and piano roll makes it easy to write a song. Many synths, a vocoder, a solid drum machine, lots of effects. Sample editing and chopping that you can assign to drums or a few of the synths. You can record moving knobs and faders. Nice big buttons and easy to get around makes it seam like a beginners app, but it is really a powerful music app.

Funkyguido1 about Caustic