KMel Robotics flying robots that can play instruments:
Just a reminder about how this all works: each one of these robots has its position measured down to the millimeter (or better) at a very high frequency using an external localization system. The individual hexrotors themselves are being centrally controlled by a computer somewhere else, sort of like a puppeteer system.
Via Hacked Gadgets.
Check out the video after the break.
Melodic drones! Great!