Gary George Peacock was an American jazz double bassist. He recorded a dozen albums under his own name, and also performed and recorded with major jazz figures such as avant garde saxophonist Albert Ayler, pianists Bill Evans, Paul Bley and Marilyn Crispell, and as a part of Keith Jarrett’s “Standards Trio” with drummer Jack DeJohnette. The trio existed for over thirty years, and recorded over twenty albums together. DeJohnette once stated that he admired Peacock's "sound, choice of notes, and, above all, the buoyancy of his playing." Marilyn Crispell called Peacock a "sensitive musician with a great harmonic sense."

Keith Jarrett is an American pianist and composer. Jarrett started his career with Art Blakey and later moved on to play with Charles Lloyd and Miles Davis. Since the early 1970s, he has also been a group leader and solo performer in jazz, jazz fusion, and classical music. His improvisations draw from the traditions of jazz and other genres, including Western classical music, gospel, blues, and ethnic folk music.