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

Self – Theremin Dancer

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)

Samuel Hoffman

Self – Mickey Mouse Show Clip (archive footage) (uncredited)

Jerry Lewis

Sidney L. Pythias (archive footage) (uncredited)

Ray Milland

Don Birnam (archive footage) (uncredited)

Patricia Neal

Helen Benson (archive footage) (uncredited)

Gregory Peck

John Ballantyne (archive footage) (uncredited)

Michael Rennie

Klaatu (archive footage) (uncredited)

Barbara Rush

Helen Fields (archive footage) (uncredited)

Joe Sawyer

Frank Daylon (archive footage) (uncredited)

Jefferson Dudley Searles

Mr. Crow (archive footage) (uncredited)

Alex Tkaczevski

Self – Translator (uncredited)