Hundreds of thousands of electronic music lovers will descend on Miami in late March for the Ultra Music Festival, which just officially activated its final lineup phase.

Electronic music mainstays are atop the bill, as expected. Headliners Armin Van Buuren, Tiesto, Hardwell, David Guetta, Knife Party, Steve Aoki, Avicii (who is back after illness last year forced him to cancel his appearance) and Afrojack are all in on the party, in addition to Live headliners (and relative newcomers) Odesza and Kygo. Both old-school, industry heavyweights and hot newbies are what festival-goers have come to expect from the world's top electronic music event.

Snag your tickets before time runs out for the March 27-29, 2015 festival. You wouldn't want to miss Miami in March...