This video, by Hans-Jörg Scheffler, celebrates the 10th anniversary of the SETI@home project:

It features my dear friend and incredibly talented musician Tatsuya Nishiwaki on chromatic harmonica. The images in the clip are a wild mixture of imaginary alien broadcasts and stuff that we humans transmit.

SETI@home is a scientific experiment that uses Internet-connected computers in the Search for Extraterrestrial Intelligence (SETI).