Ultra Fest set begins with Swedish House Mafia - Article Photos 1/2

FILE - In a Feb. 10, 2013 file photo, Swedish House Mafia, from left, Axwell, Steve, Sebastian Ingrosso, and Steve Angello arrive at the 55th annual Grammy Awards, in Los Angeles. This year's Ultra Music Festival, which begins Friday, March 15, 2013, will feature the final performance of the Swedish House Mafia. (Photo by Jordan Strauss/Invision/AP, File)