Rheyne and his iPads have been featured here so often, I really wish him luck with his entry into the BOSS Loop Contest 2012!
This is a pretty heavy bit of Jazz! At round the 2:00 mark he starts using the iPad's Gyroscope in conjunction with Lemur, similar to what we've seen him do with the MIDI Fighter 3D in earlier videos.
Submission for the Boss LoopStation World Championship (with a picture-in-picture "pedal cam"). All loops are recorded live through the RC-300.