An amazing performance by Mariska de Groot and Gert Jan Prins last night at at Atelier Nord ANX. Quadtone - Lumisonic Rotera is a mesmerizing light-is-sound projection performance in space. Graphical patterned wheels are coding a beam of light, which portable light-sensitive speakers convert into audible frequencies. All leftover light is visual sound. This was a collaboration between Atelier Nord and Cinemateket. Curator Erwin van ‘t Hart’s program Surface Noise which consisted of five films was also presented at Cinemateket in Oslo.