I've been a huge fan of late rock and blues guitar legend Gary Moore for a long time. This video of someone at a concert blew my mind as a man captured the tone of Gary Moore's guitar with his voice.
I've always been fascinated by people who can create beats with their mouth. It takes a good ear, a great sense of rhythm and timing, and a monstrous set of lungs. Oh and I'm sure there's a lot of spit in there somewhere too.