Pictured: Leon Theremin demonstrating Termenvox; by Bettmann, Corbis - (polish), Public Domain

"Theremin: Ether Music and Espionage"

Music from MC Productions:

The Subconscious

Lover Come Back to Me

L'Ardente Nuit

You're Driving Me Crazy

Lonesome Lover

Dancing with Tears in my Eyes

Music from Carolina Eyck:

Les Berceaux

Eternity

Delphic

Vocalise

U.N. Spy Debate. Reds 'Bugged' American Embassy Lodge Claims

Neil Armstrong Talks to the Space Center - Audio