Animusic - Fiber Bundles

The animation is set in a room boundaried by alienistic dark green pipes, with colored tubes and pads that play when light flows through them from fiber-optic cables. The light flows through the cables at a visible speed, and so the cables probably are filled with super-cold matter, called a Bose-Einstein condensate, which slows light down to a visible speed. The fact that the drums actually interact with these packets of lights is most likely due to there being glowing matter instead of light coming through their cables, which solidifies on contact with air, and evaporates on impact.