Avicii was forced to cancel his scheduled performance at this past weekend's Ultra Music Festival in Miami. The internationally famous Swedish DJ was hospitalized for what's reportedly a gall bladder ailment. Rolling Stone reports, Avicii (Tim Bergling) had been scheduled to close out the festival's main stage Saturday night. He checked into a hospital shortly after arriving in Miami. Avicii was hospitalized with pancreatitis two years ago. His hit song, "Wake Me Up'' is currently in "Power" Rotation on 99.9 KTDY.