More a confederation of rappers and singers than a proper group, Purple Ribbon All-Stars were assembled by OutKast's Big Boi. Got That Purp, a mixtape presented by DJ Drama, DJ Don Cannon, and DJ Sense, marked the start with multiple appearances from Big Boi and associates such as Killer Mike, Bubba Sparxxx, Sleepy Brown, and Konkrete. After he secured a deal with major-label Virgin for Purple Ribbon Entertainment, Big Boi put together Got Purp?, Vol. 2, released in November 2005. The first single, "Kryptonite (I'm on It)," featured Big Boi, Killer Mike, BlackOwned C-Bone, and...