Experimental fire/sound-installation, for research purposes: "Ruben's-tube".
A light/sound-installation, a partly dismantled upright piano is played as a "prepared piano", with a steel rod directly on the piano strings. Frame, strings and wooden soundboard are lighted by beams of (RGB-LED) coloured light. The lightbeams quicky change in colour with the sound of the vibrating strings. Played by Alex den Ouden.