After leaving his band "The Young And The Useless", Adam Horovitz joined Mike D and Adam Yauch in the Beastie Boys, opening for Madonna on her famous "Like a Virgin" tour.

Adam has also appeared in films such as Lost Angels with Donald Sutherland and Roadside Prophets with John Doe. He is the son of actor/director/producer/writer Israel Horovitz and Doris O'Keefe, an artist/painter. His brother is actor Matthew Horovitz and his sister is film producer Rachael Horovitz.

Adam was involved in releasing experimental music with Amery Smith as a member of the "BS2000" project.
Son of Israel Horovitz Brother of Rachael Horovitz and Matthew Horovitz The other two Beastie Boys admitted that he was the author of about 80% of the music on the album "Hello Nasty". His mother died of alcoholism while he was in his teens. Is the Beastie Boys' guitarist. Few people know that he suffered from a major epileptic fit, caused from flash photography. His seizures are now under control and is under constant medical supervision. Pursued an acting career in the late 1980s and early 1990s, typically getting James Dean-style parts as brooding, troubled young men. He apparently abandoned his acting career in 1994, although he continues to "act" along with his "Beastie Boys" band-mates as the various bizarre characters they play in their videos. Although born while his mother was visiting in New Jersey, he was raised in Manhattan, where he still lives. Although he plays guitar with the Beastie Boys, Adam is also skilled on the drums, keyboards, and bass. Shares a birthday with Vanilla Ice. Ex-son-in-law of Donovan. Ex-brother-in-law of Donovan Leitch.