Adam Yauch

Adam Nathaniel Yauch ( ; August 5, 1964 – May 4, 2012), better known by the stage name MCA, was an American rapper, bass player, filmmaker and a founding member of the hip hop group Beastie Boys. Besides his musical work, he also directed many of the band's music videos and did much of their promotional photography, often using the pseudonym Nathaniel Hörnblowér for such work.