Rap is a musical style in which rhythmic and/or rhyming speech is chanted (“rapped”) to musical accompaniment. This backing music, which can include digital sampling (music and sounds extracted from other recordings), is also called hip-hop, the name used to refer to a broader cultural movement that includes rap, deejaying (turntable manipulation), graffiti painting, and break dancing.
Rap, originated in African American communities in New York City and came to national prominence with the Sugar Hill Gang’s “Rapper’s Delight” (1979). Rap’s early stars included Grandmaster Flash and the Furious Five, Run-D.M.C., LL Cool J, Public Enemy (who espoused a radical political message), and the Beastie Boys. Continue reading from Encyclopedia Britannica