Hello everyone,Before couple of months, I saw a video on youtube about two guys playing the Violins (I think it were violins), so we all expect the will play calm music, but when they start they play some "hardcore" music.. They are like in a room big room, surrounded with chairs in a circle.. I remember they had long hair, both..If someone knows what I am talking about , please send me the video. I want to see it again :)Thy in advance,Popay!