A theramin is a theramin. There is another electronic instrument that is essentially a theramin with a keyboard attached called an ondes-martinot, but the two terms aren't really synonyms.
Leon Theremin invented the theremin in 1920.
Leon Theremin
The theremin was invented in 1920.
The Russian scientist Leon Theremin was the one who invented the theremin.
The Art of the Theremin was created in 1987.
Leon Theremin was born on August 15, 1896.
Leon Theremin was born on August 15, 1896.
Léon Theremin died on 1993-11-03.
Léon Theremin was born on 1896-08-15.
Theremin's cost anywhere from approximately 175.00$ to 2000.00$.
Leon Theremin's birth name is Termen, Lev Sergevitch.
Leon Theremin died on November 3, 1993 at the age of 97.