Marcus Miller (born William Henry Marcus Miller, Jr.; June 14, 1959) is an American jazz composer, producer and multi-instrumentalist, best known as a bass guitarist. Throughout his career, Miller worked with trumpeter Miles Davis, pianist Herbie Hancock, singer Luther Vandross, and saxophonist David Sanborn, as well as maintaining a successful solo career. Miller is classically trained as a clarinetist and also plays keyboards, saxophone and guitar.