Big named musical acts like Chance the Rapper, Arcade Fire, and Lorde will headline Lollapalooza 2017 The summer music festival in Chicago will host 170 bands on eight stages over a four day event. Other groups scheduled to perform are Muse, Blink-182, Wiz Khalifa, Cage the Elephant and Big Sean. The festival will take place on August 3-6 in Grant Park and tickets will go on sale this week starting at $120.