In its 13th years, Pitchfork Music Festival returns to Union Park, Chicago for another three days of great music July 20th-22nd. Headliners include Tame Impala, Courtney Barnett, Fleet Foxes, War on Drugs, Ms. Lauryn Hill and Chaka Khan. With three stages and 40-plus acts scheduled, this festival offers attendees a full selection of emerging and well-known favorites to check out.