Developers at Yamaha seem to be having plenty of fun with their iPhones -- at least, that's the impression they've made this year at CEATEC. Not only have we seen an app that lets you boss around a robotic chanteuse, but they've also put together a little something called Finger Piano Share. Don't let the video fool you, folks -- this is more than just a MIDI controller. Supporting up to ten users at once, this guy not only lets you remotely play your MIDI-enabled Disklavier via Wi-Fi, but you can record your little jam sessions (using the location-aware augmented reality app Sekai Camera) for playback whenever someone goes to the site of the original performance. Sounds like a recipe for a disastrous conceptual art piece if we ever heard one! Video after the break.