Ok, these are just my guesses based on some fact, some probability and a lot of hunch, oh and it is not, I repeat is not, the actual lineup!
Pavement, Soundgarden, Flaming Lips, Them Crooked Vultures, Faith No More, MGMT, The Black Keys, Band of Horses, Jamie Liddel, Phoenix, Chromeo, The Dead Weather, LCD Soundsystem, Peter, Bjorn and John, Vampire Weekend, The National, She and Him, Broken Bells, Japandroids, Nada Surf, The Thermals, Local Natives, Girls, Edward Sharpe & the Magnetic Zeros, The XX, The Temper Trap, Neon Indian, Vetiver, Wale, Morning Teleportation, Miike Snow, Why?, Cymbals Eat Guitars, Owen Pallet, Laura Veirs, Fresh Espresso, As Tall As Lions, Macklemore, Portugal. the Man, Frightened Rabbit, Bassnectar, Mew, Dirty Projectors, The Moondoggies and a bunch of bands I have not heard of yet...
And know ID yuh's 50:
Depeche Mode, Arcade Fire, Pavement, My Morning Jacket, Dead Weather, Vampire Weekend, MGMT, Phoenix, Band of Horses, Andrew Bird, Thievery Corporation, Drive By Truckers, The National, Rodrigo Y Gabriela, Broken Social Scene, Joanna Newsom, She & Him, Dirty Projectors, Mastodon, Toadies, Sunny Day Real Estate, Passion Pit, Raphael Saadiq, Quasi, Japandroids, Chromeo, Miike Snow, Clutch, Girls, Flying Lotus, Edward Sharp & the Magnificent Zeros, Why?, Nada Surf, Tallest Man on Earth, Baroness, Cymbals Eat Guitars, Neon Indian, Pyramiddd, YACHT, Alberta Cross, Brandi Carlile, Glitch Mob, Wale, Vetiver, Local Natives, Mayer Hawthorne, Postelles, Mimicking Birds, Morning Teleportation, Fresh Espresso.