Wolfgang Muthspiel is an Austrian jazz guitarist and record label owner. He is the brother of musician Christian Muthspiel.

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.