It's a Youtube video performance by a violinist who is interacting with a mechanical guitar called the Guitarbot. The Guitarbot was invented and constructed in 2002 by the League of Electronic Musical Urban Robots (LEMUR), of which violinist/composer Mari Kimura is associated.
More of this music can be heard on Mari Kimura's CD Polytopia: Music for Violin and Electronics on Bridge Records (9236) released September of 2007.
I'm not sure what to say. I don't want to hurt the robot's feelings. Mari plays great!
Links:
http://www.bridgerecords.com/pages/catalog/9236.htm
http://homepage.mac.com/marikimura/MAIN/
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