As reported earlier, the Ultra Miami festival will stretch two weekends this year, ultimately leading to 10+ days of straight partying in Vice City. Ultra has released their “PHASE ONE” line-up for the 15th anniversary of the festival, with a second phase to be announced later. As you can see from the flier below, the event boasts many of the biggest names in electronic music, including Above & Beyond, Afrojack, Armin Van Buuren, Avicii, Bassnectar, Calvin Harris, Carl Cox, David Guetta, Fatboy Slim, Kaskade, Knife Party, Richie Hawtin, Swedish House Mafia, Tiesto, Bloody Beetroots, Booka Shade, BoysNoize, Crystal Castles, Deadmau5, Hot Chip, Thievery Corporation, and more.