Leon Theremin
Self – Inventor of the Theremin
Clara Rockmore
Self – Theremin Virtuoso
Robert Moog
Self – Inventor of the Moog Synthesizer
Nicolas Slonimsky
Self – Composer and Historian
Paul Shure
Self – Musician
Henry Solomonoff
Self – Theremin Studio Member
Suki Bader
Self – Theremin Dancer
Beryl Campbell
Lydia Kavina
Self – Theremin's Niece
Brian Wilson
Self – Founder of The Beach Boys
Todd Rundgren
Self – Musician and Producer
Vladimir Lenin
Self (archive footage)
Ingrid Bergman
Dr. Constance Petersen (archive footage) (uncredited)
Bobby Burgess
Actor in Mickey Mouse Show Clip (archive footage) (uncredited)
