I recently had the pleasure of seeing American singer / guitarist Baby Gramps at the "Rogue's Gallery" concert at London's Barbican. Here's a short clip of him (I chose at random) from YouTube: Baby Gramps There are plenty more, but you'll get the idea.
He sounds like a cross between a Tuvan overtone singer and Popeye The Sailorman, combined with hobo chic. He's really entertaining, and has probably honed his act from years of busking, though I know little about his background.
Has anyone seen him for more than a couple of songs? Is he a link with the weird musical past, or a one trick pony?