Beastie Boys were an American rap group from New York City, formed in 1981. The group was composed of Michael "Mike D" Diamond (vocals, drums), Adam "MCA" Yauch (vocals, bass), and Adam "Ad-Rock" Horovitz (vocals, guitar, programming). Beastie Boys were formed out of members of experimental hardcore punk band the Young Aborigines in 1978, with Diamond as vocalist, Jeremy Shatan on bass guitar, John Berry on guitar, and Kate Schellenbach on drums. When Shatan left in 1981, Yauch replaced him on bass and the band changed their name to Beastie Boys. Berry left shortly thereafter and was replaced by Horovitz.
