Since April, André 3000 has been on the road, traveling from festival to festival with his old partner Big Boi to celebrate the 20th anniversary of their debut album as Outkast. And on Sept. 26, he’ll star, under his original name, André Benjamin, as Jimi Hendrix in Jimi: All Is by My Side, a biopic about the year just before Hendrix’s breakthrough, when he moved to London, underwent a style transformation and squared off against Eric Clapton.