Marcus Miller (born June 14, 1959 in New York) is a jazz musician, composer, and producer, perhaps best known as a bass guitarist with Miles Davis and David Sanborn. Miller is classically trained as a clarinetist, and also plays bass, keyboards, saxophone, and guitar, and is a capable singer. Miller's proficiency on his main instrument, the electric bass, is generally very well regarded. Not only has Miller pioneered the continuing development of a technique known as "slapping", but his fretless bass technique has also served as an inspiration to many, and has taken the fretless bass into musical situations and genres previously unexplored with the electric bass of any description.