Adam Keefe Horovitz (born October 31, 1966), also known as King Ad-Rock or Adrock, is an American musician, guitarist, rapper, producer, and actor. He is best known as a member of the pioneering hip hop group, Beastie Boys. Horovitz was born in South Orange, New Jersey, the son of Doris Keefe and playwright Israel Horovitz. Horovitz began his musical career with a stint in the punk rock band, The Young and the Useless, who would often perform with Beastie Boys. When Beastie Boys guitarist John Berry quit, Horovitz was an obvious choice to replace him.

Read more about Adrock on Last.fm.

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