This seminal R&B trio was the first group to sport the new jack swing sound, essentially traditional soul vocals melded to hip-hop beats, with credit for the genre's invention going to founder, multi-instrumentalist, and super-producer Teddy Riley. Riley formed his first band, Wreckx-N-Effect, while still a teenager, with brothers Markell Riley and Brandon Mitchell; Guy followed a few years later in 1987. Its first incarnation featured vocalists Aaron Hall and Timmy Gatling. Their self-titled debut album was an instant smash, producing the R&B hits "I Like," "Groove Me," "Spend the Night," and "Teddy's Jam." Meanwhile, Riley found himself in strong demand as a songwriter and producer; in 1988, Riley produced Bobby Brown's Don't Be Cruel, the album that helped new jack swing cross over into the pop mainstream. Riley has also worked with Kool Moe Dee, Michael Jackson (Dangerous), Stevie Wonder, Keith Sweat, Jane Child, and SWV, among others. In between albums, Guy contributed songs to the soundtracks of Do the Right Thing and New Jack City.