Ultra Music Festival celebrate their 15th year in action in 2013 and have announced "phase one" of their lineup and arenas, which will include Matt And Kim, Hot Chip, Crysal Castles, deadmau5, Knife Party, Yeasayer and many more. Watch a trailer featuring artist announcements and see the list below: 

DJs:

Above & Beyond

Afrojack

Armin Van Buuren

Avicii

Bassnectar

Calvin Harris

Carl Cox

David Guetta

Fatboy Slim

Kaskade

Knife Party

Richie Hawtin

Swedish House Mafia

Tiësto

Live Acts:

The Bloody Beetroots

Booka Shade

Boys Noize

Crystal Castles

deadmau5

Disclosure

DJ Fresh (Live)

Hot Chip

Major Lazer

Matt & Kim

Modestep

Rudimental

Thievery Corporation

Yeasayer

Arenas:

A State Of Trance 600 Arena

Carl Cox and Friends Arena

Mixmag Arena

Space Ibiza

Tickets for the two-weekend event are available at the Ultra Music Festival official website. The festival takes place March 15-17 and March 22-24 at Bayfront Park in dowtown Miami, FL.