Herb Ellis: Swing Jazz Soloing and Comping (1991)

"Comping (an abbreviation of accompanying) is a term used in jazz music to describe the chords, rhythms, and countermelodies that keyboard players (piano or organ) or guitar players use to support a jazz musician's improvised solo or melody lines. The term is also used for the action of accompanying, and for left hand part of a solo pianist."

Unfortunately the movie Herb Ellis: Swing Jazz Soloing and Comping is not yet available on HBO Max.