Legal name: Adam Keefe Horovitz
Also performs as: Ad‐Rock
Adam Keefe Horovitz (born October 31, 1966), better known as Ad-Rock or King Ad-Rock, is an American musician, guitarist, rapper, producer, and actor. He is best known as a member of the hip hop group the Beastie Boys. He is married to musician and feminist activist Kathleen Hanna.