Herbert Jeffrey Hancock is an American jazz musician, bandleader, and composer. Hancock started his career with trumpeter Donald Byrd's group. He shortly thereafter joined the Miles Davis Quintet, where he helped to redefine the role of a jazz rhythm section and was one of the primary architects of the post-bop sound. In the 1970s, Hancock experimented with jazz fusion, funk, and electro styles, using a wide array of synthesizers and electronics. It was during this period that he released perhaps his best-known and most influential album, Head Hunters.

The Miles Davis Quintet was an American jazz band from 1955 to early 1969 led by Miles Davis. The quintet underwent frequent personnel changes toward its metamorphosis into a different ensemble in 1969. Most references pertain to two distinct and relatively stable bands: the First Great Quintet from 1955 to 1959, and the Second Great Quintet from late 1964 to early 1969, Davis being the only constant throughout.