The Beastie Boys were an American hip-hop group formed in New York City in 1981. They were composed of Adam "Ad-Rock" Horovitz (vocals, guitar), Adam "MCA" Yauch (vocals, bass), and Michael "Mike D" Diamond (vocals, drums). The Beastie Boys were previously members of the hardcore punk band the Young Aborigines, with Diamond on drums, Jeremy Shatan on bass guitar, and John Berry on guitar. Kate Schellenbach later joined on drums. When Shatan left in mid-1981, Yauch replaced him on bass... [more on Wikipedia]