The instrument is called the Theremin

In this orchestra, a woman plays an instrument called the theremin: it is a quantum instrument that is played only with the energy of the hands, an instrument that forms a magnetic field and is played untouched.

Only three countries in the world have music schools that teach theremin playing: Russia, Japan and Ireland. The theremin was invented by Leon Theremin, a Russian who introduced it to Lenin in 1920, who was impressed by its sound. WAIT FOR IT, THE BEGINNING IS THE INTRODUCTION, AND THEN WATCH THE WOMAN WHOSE HANDS SEEM TO PLAY IN THE AIR !