Ran across this absolutely fascinating new instrument.....NPR has a 10 minute video of Leonardo da Vinci's String Organ.
Built for the first time recently. Here is the article and accompanying vid. Enjoy!
http://www.npr.org/blogs/deceptivecadence/2013/12/01/247543086/da-vinci-s-string-organ-must-be-heard-to-be-believed?utm_medium=Email&utm_campaign=20131208&utm_source=mostemailed
Scroll down for the video. Well worth the time!