The 15th anniversary lineup was unveiled via a minigame/app which revealed names of artists performing.
Other gems on the bill include Swans, Sun Kil Moon, Tyler, The Creator, James Blake, Damien Rice, Belle and Sebastian, American Football, José González, Jungle, Foxygen, Caribou, Mac DeMarco, Panda Bear, Jon Hopkins, Perfume Genius, and, frankly, more than is reasonable to list.
Primavera 2015 will take place 27-30 May in Barcelona. For more information, including ticket details, head here.
You can discover the entire lineup below; fair warning, it's a good 'un.