Via Gizmodo, the host of YouTube’s Look Mum No Computer debuted a video in which he demonstrated how he combines lightsabers with a theremin. Léon Theremin created the first theremin back in 1928, and it’s an electronic musical instrument that is most commonly associated with classic sci-fi and horror films, although it has also been used by rock bands and avant-garde musicians.

One of the key steps in the creation of the lightsaber theremins was the insertion of an accelerometer chip. As explained by the host, that is the same chip that allows smartphones and video game controllers to recognize which direction they are facing at any time. Since a theremin is also controlled by the motions of a performer’s hands, the accelerometer chip turned out to be an ideal choice for this build.