looks like an atlansia( judging by the pickups...) on a very carl thompson/ritter ish body and turned around lefay like headstock(s)...interesting!!!
Ever heard that lovely album Heart of the Forest? It's got lots of examples of people (mostly children) playing one-stringed harps and even cables and gut strings tied to trees. I'm convinced you can make great music with one string - in fact the album was an inspiration when I came to do some of my own recordings here for example (although done on a 4 string here.