Earl Simmons (born December 18, 1970), better known by his stage name DMX (also known as Dark Man X, Dog Man X, and Divine Master of the Unknown) is a multi-Platinum American rapper and actor who rose to fame in the late 1990s. His stage name was originally an acronym of "Divine Master of the Unknown", but also pays tribute to an instrument he used in the 1980s, the Oberheim DMX drum machine In 1999, DMX released his best-selling album (As of January 2012[update]), ...And Then There Was X, which featured the hit single "Party Up (Up in Here)". He has acted in films such as Belly, Romeo Must Die, Exit Wounds, Cradle 2 The Grave, and Last Hour. In 2006, he starred in the reality television series DMX: Soul of a Man, which was primarily aired on the BET cable television network. In 2003, DMX published a book of his memoirs entitled, E.A.R.L.: The Autobiography of DMX.