You may not be able to see it in the video, but the thing is being run on a 9 volt battery.
Visited the Cantos Foundation keyboard and electronic instrument museum 2009-02-12 and took a lot of pictures and videos.
Brandon from the Cantos Foundation gave the demonstration and gave us the tour of the facilities. Thank you very much Brandon! We really enjoyed the tour.
Cantos Foundation web site cantos.ca
Photos from the tour can be found at flicker.com/roll_initiative