Unk, the Atlanta rapper known for the hits ... totemic snap and crunk tracks like “Crank That (Soulja Boy),” Lil Jon’s “Get Low,” Yung Joc’s “It’s Goin’ Down,” and D4L ...

Unk, along with artists like Lil Jon, T.I., and Young Jeezy, helped put Atlanta on the map as the epicenter of Southern rap. The crunk era, with its hyped-up beats and crowd chants, revolutionized ...