At this years Ars Electronica technology art festival (Klangwolke), the audience enjoyed the performance of a Quadcopter Swarm, consisting of 50! Quadcopters (AscTec Hummingbirds) synchronized together to fly and form shapes like one single organism, which in fact is a world record. The quadcopters were equipped with led lights in different colors to perform ambient light effects during the motion. The so called ‘Cloud in the Web’ performance was programmed by the Ars Electronica Futurelab and Ascending Technologies GmbH. The firmware of the standard AscTec Hummingbird Quadcopters was modified slightly to enable this synchronized art performance.