Foster and Allen's recording of THE BLACKSMITH can be found on their 1997 album "Forty Shades of Green: A Tribute to Old Ireland" and on "The Greatest Hits," 2001. They call it "traditional."

I listened to a sound sample at Allmusic.com, and I found the tune strangely upbeat given the subject matter, but that might be just Foster & Allen's performance. It's in waltz time.