The official lineup for the 2012 edition of Lollapalooza festival has been announced with Red Hot Chili Peppers, Black Sabbath, Black Keys headlining the 3 day event. Frank Ocean, The Weeknd, J. Cole, Wale and Santigold are few of the Urban/Hip-Hop acts who will be hitting the stage from August 3rd to 5th at Grant Park in Chicago, Illinois. Check out the full list of performers after the jump. You buy tickets here.

Florence + the Machine, Passion Pit, the Shins, Sigur Ros, Fun., M83, Franz Ferdinand, Metric, Dawes, the Temper Trap, Die Antwoord, Mona, the Growlers, the Gaslight Anthem, Hey Rosetta!, JEFF the Brotherhood, Band of Skulls, Anamanaguchi, SBTRKT, First Aid Kit, Tame Impala, Wax, the Walkmen, FIDLAR, JJ Grey & Mofro, LP, JC Brooks & the Uptown Sound, Milo Greene, Neon Indian, Dum Dum Girls, Kopecky Family Band, Washed Out, the Jezabels, Aloe Blacc, Trampled by Turtles, Yuna, Bear in Heaven, Walk Off the Earth, Blind Pilot, Animal Kingdom, Chairlift, Dev, J. Cole, the Black Angels, the Sheepdogs, Yellow Ostrich, the Dunwells, GIVERS, DJ Mel, Polica, Empires, Bombay Bicycle Club, Kevin Devine, Wale, Dry the River, White Rabbits, Helena, Haley Reinhart, Imaginary Cities, the Head & the Heart, the Devil Makes Three, Overdoz, the Big Pink, Oberhofer, Ambassadors, Twin Shadow, the War on Drugs, DJ Zebo, the Tallest Man on Earth, Chancellor Warhol, Toro Y Moi, O Rappa, Laura Warshauer, Dr. Dog, Bowerbirds, Red Oblivion, Of Monsters and Men, Orchard Lounge.

Perry’s stage: Bassnectar, Santigold, Skream & Benga, Totally Enormous Extinct Dinosaurs, Kaskade, Little Dragon, Star Slinger, Calvin Harris, Porter Robinson, Nadastrom, NERO, Sub Focus, DJ Nihal, Madeon, the White Panda, Knife Party, Zedd, SALVA, Zeds Dead, Paper Diamond, Kid Color, Big Gigantic.

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