The tune is here (click) in the Digital Tradition, but we've been having some problems with our MIDI files and it may not work. The lyrics in the DT are almost exactly the same as what Turlough posted, although the DT words have a thicker dialect to them. If the DT tune doesn't work, there's a copy of it at Yet Another Digital Tradition.
I guess I learned this song from the Gordon Bok recording. It's on his North Wind's Clearing CD. It's a fun song.
-Joe Offer-