The band is composed of one bulgarian guy playing gadulka, a mongolian playing morin khoor and a french beating whatever he can put the hands on.
Better than words, demonstration!
http://www.violonsbarbares.com/enlive.html
(direct link to their "live" page, their website is in french
I have to say that I don't know them and am not involved at all in their promotion. I just thought it could interest you to discover another band
