I've been sort of following this story. It's quite fascinating to me for some reason. Dude just showed up wandering around, in a wet suit. They took him to a hospital, where he drew a piano. So they took him to a piano and he sat down and played for them. He didn't speak at all until recently, when he told them he was German, so they sent him on back to Germany.
The articles tell it better than I do. I don't know why I think it's such a neat story... I just do.