Lady Gaga performed at the 2013 iTunes Festival at The Roundhouse. The live broadcast was available through Apple TV on the iTunes Festival streaming channel and on iOS devices for free. The 1 hour performance was later released on the international / Japan deluxe edition of "ARTPOP" in 2013. Since then, the 1 hour and 14 minutes performance is available as a movie to buy or rent on Apple TV in select countries. DJ White Shadow was the opening act which was not available outside of those present...