Lollapalooza celebrates their 25th anniversary by adding a fourth day to the festival. Headliners are Radiohead, Red Hot Chili Peppers, LCD Soundsystem, J. Cole, and Lana Del Rey. Other acts include Jane's Addiction, M83, Lettuce, Chris Stapleton, Leon Bridges, Big Grams, Nathaniel Rateliff & The Nightsweats, and FIDLAR, amongst many, many more.