Here’s a musical installation that’s rad as all get out.
Archifon I. is a big interactive musical instrument controlled with laser pointers. Up to 10 visitors at a time can interact with the Archifon through the laser pointers. By pointing on any of more than 100 elements, different audiovisual actions are initiated.
It’s by Tomas Dvorak, who composed the awesome soundtrack to the awesome game Machinarium, and Dan Gregor.
(Source: http://vimeo.com/)