The Beastie Boys were an American hip hop 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). The Beastie Boys were formed as a four-piece hardcore punk band, the Young Aborigines, in 1978 by Mike D (vocals), MCA (bass), John Berry (guitar) and Kate Schellenbach (drums). They appeared on the compilation cassette New York Thrash, contributing two songs from their first EP, Polly Wog Stew, in 1982.