Jay Leonhart is an American double bassist, singer, and songwriter who has worked in jazz and popular music. He has performed with Judy Garland, Bucky Pizzarelli, Carly Simon, Frank Sinatra, and Sting. Leonhart is noted for his clever songwriting, often laced with dry humor. His compositions have been recorded by Blossom Dearie, Lee Konitz, and Gary Burton. His poetry is published both in, and outside of, the venue of song.

Gary Burton is an American jazz vibraphonist, composer, and educator. Burton developed a pianistic style of four-mallet technique as an alternative to the prevailing two-mallet technique. This approach caused him to be heralded as an innovator, and his sound and technique are widely imitated. He is also known for pioneering fusion jazz and popularizing the duet format in jazz, as well as being a major figure in music education from his 30 years teaching at the Berklee College of Music.