Ray (born August 12, 1963), better known by his stage name Sir Mix-a-Lot, is an American rapper, songwriter, and recording producer. He is best known for his 1992 hit song "Baby Got Back", which peaked at number one on the Billboard Hot 100. Ray (born August 12, 1963), better known by his stage name Sir Mix-a-Lot, is an American rapper, songwriter, and recording producer. He is best known for his 1992 hit song "Baby Got Back", which peaked at number one on the Billboard Hot 100.