We found this really interesting video on YouTube and wanted to make sure you had seen it. Peter Kirn from Create Digital Music (CDM) demonstrates music creation on the iPad via the Camera Connection Kit and various external hardware devices.

If you want to get your audio/MIDI geek on, this video is backed up by a brilliantly in-depth column over at CDM. There are a lot more videos and some great commentary on the vagaries of using the iPad and MIDI devices/software in that article, which we highly recommend reading.