About Ad-Rock
Adam Keefe Horovitz, known professionally as Ad-Rock, is an American rapper, guitarist, and actor. He was a member of the hip-hop group Beastie Boys. While Beastie Boys were active, Horovitz performed with a side project, BS 2000. Since the group disbanded in 2012 following the death of Adam Yauch, Horovitz has participated in several Beastie Boys-related projects, worked as a remixer, producer, and guest musician for other artists, and acted in a number of films. Several albums followed, with some attaining platinum or multi-platinum status, and by 2010, Beastie Boys had sold 40 million albums worldwide, including 22 in the U.S.
Biography source: Wikipedia. The profile adds birthday-specific historical context from the Celebs Birthday Today editorial database.