Metallica had this to say about their headlining slot, "It's been nearly 20 years since we've been lucky enough to take the stage at Lollapalooza, so we are over the top that we've been asked to play this year at the now annual extravaganza held at Grant Park in Chicago. We'll be hitting the stage on Saturday, August 1st."

This year's lineup also includes Sam Smith, Charli XCX, Bassnectar, The Weeknd, Of Monsters and Men, Kid Cudi, Alabama Shakes, Alt-J, Tyler the Creator, Philip Selway, Death From Above 1979, Hot Chip, TV on the Radio, Brand New, Gary Clark Jr., Gogol Bordello, and more.

Find the lineup for each day below:

Friday Lineup: Paul McCartney, The Weeknd, Alt-J, Alabama Shakes, Kaskade, Dillon Francis, Gary Clark Jr., Flying Lotus, Hot Chip, the War on Drugs, Father John Misty, DJ Snake, Sylvan Esso, MS MR, Tove Lo, Glass Animals, St. Paul & the Broken Bones, First Aid Kit, DJ Mustard, James Bay, Broods, MisterWives, What So Not, Sxa, Jamestown Revival, Philip Selway, Young Thug, Coasts, Destructo, Borns, Badbadnotgood, Mighty Oaks, Bear's Den, Peking Duk, Black Pistol Fire, Spookyland, Bully, Gabriel Garzon-Montano, Kyle Thornton & the Company, The New Pacific, Daye Jack, The Pop Ups, Q Brothers, School of Rock AllStars, The Jimmies, Mista Cookie Jar and the Chocolate Chips

Saturday Lineup: Metallica, Sam Smith, Alesso, Tame Impala, Kid Cudi, Brand New, Carnage, G-Easy, Walk the Moon, Tyler the Creator, The Tallest Man on Earth, Banks, Chet Faker, Sturgill Simpson, Death From Above 1979, Toro y Moi, Charli XCX, Django Django, Boys Noize, Delta Spirit, RL Grime, Givers, Ryn Weaver, Travi$ Scott, Caked Up, Hermitude, Wet, Holychild, Catfish and the Bottlemen, Zella Day, Mr. Eden, Jessica Hernandez & the Deltas, Snbrn, Ellie King, Beat Connection, Mick Jenkins, Raury, Jack Novak, Pell, White Sea, Hippo Campus, Coin, Danny Weinkauf, School of Rock Allstars, The Jimmies, Mista Cookie Jar and the Chocolate Chips, The Helmets