Lollapalooza 2012, which will be held this year in Chicago’s Grant Park from 3rd to 5th August, already has a roster. Among the headliners are artists like The Black Keys, Red Hot Chili Peppers, Black Sabbath, Jack White, The Shins and Sigur Rós. But as usual, the programming is enormous and on the roster we can also find names of the calibre of The Weeknd, The Afghan Whigs and M83. To the right you can check out all of the groups announced so far. If you like what they offer, you should know that you’re still in time to get your ticket for 230 dollars. Run don’t walk, they’re selling fast.