MIDI over Bluetooth w/ iMS-20 x iElectribe
Bluetooth or NFC may both be good candidates and alternatives to all those chords going forward:
MIDI sync over Bluetooth using two iPads running Korg’s MS-20 synthesizer and iElectribe drum machine. now possible with Korg’s implementation of wireless sync-start technology (WIST) and no latency even over built-in speakers! shot w/ iPhone 4 in left hand.