Self – Inventor of the Theremin
Self – Theremin Virtuoso
Self – Inventor of the Moog Synthesizer
Self – Composer and Historian
Self – Musician
Self – Theremin Studio Member
Self – Theremin Dancer
Self – Theremin Dancer
Self – Theremin's Niece
Self – Founder of The Beach Boys
Self – Musician and Producer
Self (archive footage)
Dr. Constance Petersen (archive footage) (uncredited)
Actor in Mickey Mouse Show Clip (archive footage) (uncredited)
Self – Mickey Mouse Show Clip (archive footage) (uncredited)
Sidney L. Pythias (archive footage) (uncredited)
Don Birnam (archive footage) (uncredited)
Helen Benson (archive footage) (uncredited)
John Ballantyne (archive footage) (uncredited)
Klaatu (archive footage) (uncredited)
Helen Fields (archive footage) (uncredited)
Frank Daylon (archive footage) (uncredited)
Mr. Crow (archive footage) (uncredited)
Self – Translator (uncredited)