Yamaha CS80

http://www.youtube.com/watch?v=ybNovLdlKFw&mode=related&search=yamaha%20cs-80   
(watch out for line wrap!)

Very cool!  Unfortunately, it's in Japanese.  Can anyone translate and  
tell us who this is, when it was made, and why?

Here's another:
http://www.youtube.com/watch?v=Oh7kfS7IAVA&search=yamaha%20cs80

Enjoy,

  David