This installation at NYU's ITP Winter Show responds is responsive to touch, and sounds as trippy as it looks. That's a very good thing.

Human Wind Chime is a light and sound sculpture by Mindy Tchieu, Patricia Adler and Saul Kessler that comprises 25 four-inch polypropylene balls, each of which is outfitted with an LED and arranged in a descending spiral. When touched, each ball lights up and emits a sound, with each ball's pitch corresponding to its height. The result, as you can see in the video above, is an ethereal blend of art, instrument, and toy. Now if only someone could figure out how to play "Chopsticks" on it. [ITP Winter Show]