Adam Keefe Horovitz (born October 31, 1966[citation needed]), better 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 . He also played with Los Angeles based hardcore legends, D.F.L (Dead Fucking Last). He played bass and produced their first album 'My Crazy Life'. Tom Davis, brother-in-law to fellow Beastie Boy Member Mike D, sang vocals. Adrock, with Mike D and MCA, would endure as the classic Beastie Boys line-up.
In addition to his work with Beastie Boys, Horovitz has released music with a side-project called BS 2000 and has produced albums for Teriyaki Boyz and Northern State. For a time, he also pursued an acting career, with appearances in films such as Lost Angels, Roadside Prophets, and A Kiss Before Dying.
He has been linked romantically to various entertainers including Molly Ringwald (1987-1988), Ione Skye (1988-1999; married 1992-1999), and musician Kathleen Hanna (1997-present, married in 2006.)
He has created remixes for artists such as Fatboy Slim, Le Tigre, Lady Sovereign, Beck & M.I.A., often using the name 41 Small Stars. His main production tool is Reason.
He is mentioned in the Sublime song "Don't Push" off their album 40 Oz. To Freedom
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