{from the source} — Basically it’s strings attached to my wrists, that run around the room to connect to a pen hanging from the ceiling in such a way that the left hand controls up-down, and the right (bow) hand controls left-right. I.e. it turns me into a plotter. Then, when I play cello, the gestures of the playing are transmitted into the line in the drawing.

(Source: Flickr / gshowman)