This drone spectacle set the record for most UAVs airborne simultaneously. Controlled by a crew using PCs with Intel software, the mass of drones lit up the night sky in sync to a live performance of Beethoven’s Fifth Symphony and executed a stunning light show resembling a fireworks display.
http://www.guinnessworldrecords.com/news/2016/1/intel-stuns-during-ces-keynote-with-record-for-most-drones-airborne-simultaneousl-411677