Adam Horovitz

Adam Keefe Horovitz, known professionally as Ad-Rock, is an American rapper, guitarist, and actor. He was a member of the hip-hop group the Beastie Boys. While the Beastie Boys were active, Horovitz performed with a side project, BS 2000. Since the group's dissolution, Horovitz has participated in several Beastie Boys projects, worked as a remixer, producer, and guest musician for other artists, and acted in a number of films.