Wreckx-n-Effect was a new jack swing group from the United States who had the multi-platinum hit "Rump Shaker" in 1992/1993, which was produced by Teddy Riley.
The group, originally composed of then adolescent Aqil "A-Plus" Davidson, Keith "K.C." Hanns, Brandon Mitchell and Markell Riley, was formed around 1988 as Wrecks-N-Effect. Their first release, an eponymous EP of six tracks for Atlantic Records, included the singles "Go For What You Know", "Let's Do It Again" (which sampled The Staple Singers hit song), and a self-titled track sampling Jimmy Castor's "The Bertha Butt Boogie". They received little promotion from Atlantic; however, with the help of one-time manager and alleged gangster Gene Griffin, the group jumped ship for Motown Records. By the time they released their self-titled debut album the following year, K.C. had left and the group became a trio. Wrecks-n-Effect was produced by producer/songwriter Teddy Riley (brother of Markell Riley), and rapper/producer Redhead Kingpin; the album reached #16 on the Top R&B/Hip-Hop Albums chart and #103 on the Billboard 200 chart. The singles "Juicy" and "New Jack Swing" were released, with "New Jack Swing" reaching #1 on the Billboard Rap chart. Tragically, Mitchell was killed in a shooting incident shortly after its release in 1990.