GarageBand on iOS devices now has an export direct to iMovie on your device finally facilitating a mobile movie and soundtrack production workflow without requiring an iTunes synch to transfer your original soundtracks to iMovie – YAY! Note: iOS 5.1 required & the latest iOS updates for iMovie & GarageBand.
GarageBand for iPad – MIDI Messages and Key Mappings: “GarageBand for iPad – MIDI Messages and Key Mappings”
(Via iOS MIDI.)
Midi messages supported so far:
CC 1 – Modulation (in keyboard, for synths etc)
CC 7 – Current Track volume (only works in instrument mode, not in arrangement mode)
CC 8 – Current track pan (only works in instrument mode, not in arrangement mode)
CC 64 – Sustain Pedal