I don't get around much; so I found to be interesting.  It's a nylon string classical guitar, with no body.  My guess is that there and neck and bridge piezos.  The playing on the video is very nice, and the guitar sounds nice as well.

Yamaha, I believe..

If I remember right that is a Yamaha

CTID%25253D600022%2C00.html,http://www.yamaha.com/guitars/silent/0,,CTID%25253D600022,00.html

Thanks for the info.  Interesting.

A friend has one of these. He took off the bouts for whatever reason and put them back on backwards and now the thing looks completely alien!

That's a great performance, too!