More recently, hip-hop artists (A Tribe Called Quest, Guru) have cited bebop as an influence on their rapping and rhythmic style. As early as 1983, Shawn Brown rapped the phrase "Rebop, bebop, Scooby-Doo" toward the end of the hit "Rappin' Duke". Bassist Ron Carter collaborated with A Tribe Called Quest on 1991's "The Low End Theory", and vibraphonist Roy Ayers and trumpeter Donald Byrd were featured on "Guru's Jazzmatazz, Vol. 1" in 1993. Bebop samples, especially bass lines, ride cymbal swing clips, and horn and piano riffs are found throughout the hip-hop compendium.