Big Boi Announces the Kryptonite Festival Outkast member Big Boi has thrown his name into the music festival circuit. Big Boi has announced that the Kryptonite Festival will be taking place at Chastain Park on April 18. The festival will feature familiar faces like Big Boi, Goodie Mobb, and more. Tickets for the show are available for pre-sale via LiveNation by using the code Kryptonite. Regular tickets go on sale Friday. What do you think of Big Boi’s show lineup?