DJ Screw, a.k.a. Robert Earl Davis Jr., changed rap and hip-hop forever. In the 1990s, in a spare room of his Houston home, he developed a revolutionary mixing technique known as chopped and screwed. Spinning two copies of a record, Screw would “chop” in new rhythms, bring in local rappers to freestyle over the tracks, and slow the recording down on tape. Soon Houstonians were lining up to buy his cassettes—he could sell thousands in a single day. Fans drove around town blasting his music,...

The neighborhoods of Fifth Ward, Fourth Ward, Third Ward, and the Southside of Houston, Texas, gave birth to Houston rap, a vibrant music scene that has produced globally recognized artists such as Geto Boys, DJ Screw, Pimp C and Bun B of UGK, Fat Pat, Big Moe, Z-Ro, Lil’ Troy, and Paul Wall. Lance Scott Walker and photographer Peter Beste spent a decade documenting Houston’s scene, interviewing and photographing the people—rappers, DJs, producers, promoters, record label owners—and places...