20 March 2009

Theremin - one of the earliest electronic musical instruments, invented (1920) in the Soviet Union and named for its creator, Leon Theremin . A forerunner of the synthesizer, it consists of a wooden box fitted with two radio-frequency oscillators and two metal antennas, a vertical rod on the instrument's right and a horizontal ring on its left. The player moves the hands in the air around the antennas without touching them, creating changes the antennas' electromagnetic fields.