Michael Louis Diamond , better known as Mike D, is an American rapper and founding member of the hip hop group the Beastie Boys. Diamond raps, sings, and plays drums. He has provided remixes for Moby and Björk.BiographyA product of the arts-oriented Saint Ann's School, Diamond was born in New York City to a Jewish household. In 1979, Diamond co-founded the band The Young Aborigines. In 1981, Adam Yauch, aka MCA, a friend and follower of the band, became their bass player, and on the suggestion of their then-guitar player, John Berry, the band changed their name to the Beastie Boys. By 1983, Adam Horovitz joined, and their sound began to shift away from punk to hip hop.In 1992, Diamond founded the Beastie Boys' now-defunct record label Grand Royal Records.