For years I have used my 3rd gen Ipad for lyrics and lead sheets with UnRealbook. While waiting for a USB host connection for my USB midi breath controller to arrive, I tried it on the Ipad and found all kinds instrument apps in the App Store. Thumbjam, korg Gadget and it's modules, to name a few. The midi connection is fast and solid, and the sounds are very good if you watch what you are buying. Tere are thousands of app; some good, some not so much.

Thanks Bachus.