Ultra Music Festival Miami 2012. It's an EDM (Electronic Dance Music) festival. I unfortunately couldn't afford to go this year. I did get the chance to go last year though, and it was INSANE. I plan on going to EDC (Electric Daisy Carnival) though (got my tickets).
For those of us who are into this and didn't get to go....you can watch it LIVE online.
https://www.youtube.com/user/UMFTV?ob=0&feature=results_main
PS: At the time of this posting, Avicii is up next and you just know he's gonna KILL that set. One to remember for sure.
PPS: Nicky Romero, Tiesto, Benny Benassi, Afrojack, Laidback Luke (w/ guest apperance by Chuckie), Hardwell, and others threw down some MAJOR beats.