Answer: theremin

AnswerCrossword Clue
THEREMINInstrument with antennas
THEREMINEerie-sounding instrument
THEREMINFirst electronic musical instrument.
THEREMINElectronic musical instrument
THEREMINEarly electronic musical instrument
thereminmusical instrument with electronic tone generation, the pitch and tone volume being controlled by the distance between the player's hands and two metal rods serving as antennas