This tattooed, bearded street performer was videotaped outside of the cathedral in Strasbourg, Austria with just his lute and his voice. And, to be honest, we've really never heard anything like this coming from a dude who looks like that. 

Without giving too much away, we're guessing he's other got some sort of con-TRAP-tion that makes his voice go that way or else he's an incredibly skilled vocalist. Either way, it's damn impressive.