This Is What 49 Sky-Dancing Drones Look Like...

[http://youtu.be/ShGl5rQK3ew]These are quadrotors...  ...them, flying/dancing in unison. The show, called Cloud In the Network , took place at German art conference Ars Electron...

http://www.neatorama.com/2012/09/06/This-Is-What-49-Sky-Dancing-Drones-Look-Like/