An upgraded version of the Theremin was Bob Moog's last project. You know the story behind this? Leon Theremin was a hotshot physicist who develped the theremin during his proximity sensor work for the Soviet military. He showed it to Lenin, who was so impressed that he sent Leon on a world tour in 1919. Leon took the opportunity to defect during his visit to the US, pantented his theremin and sold it to RCA. Needless to say, the Soviets weren't amused and one day in 1938, Soviet agents visited him in New York, and kidnapped him back to Russia. He worked for much of the next few decades in a scientific gulag, but apparently only died about 10 years ago.