One side effect of poking around the site is that I think I'll be getting back to playing the recorder. The net and the internet had supplanted recorder playing in my life. Little did I realize that the net is full of sheet music!
In particular, there's a jig called Tam Lin--nothing to do with the ballad, apparently, but the Tam Lin site has a link to it anyway. A small mystery--the comments describe the jig as going from D minor to A minor, but it sounds to me as though it goes to C major. (It's the same notes either way, afaik it's a question of whether you think it sounds cheerful or not. That's a big afaik, and I bet music theorists think about it some other way.)