Theramin is an electric musical instrument played without the physical contact with the player. Pitch is really difficult to control and takes some practice.
This version of the instrument is made by MOOG synthesizer from Asheville, NC and because of it’s smaller size called Theramini.
Invented by a Soviet scientist Léon Theramin, device has been patented in 1928 and was more popular in the 1920s.
@banjo