Thanks, Colonel Sun,
Yes, 'Ghostriders in the Sky' is the tune. This might be it. I'm not sure that I'd recognize the version that I heard on 'Pearls of Wisdom', a radio program which was unfortunately abruptly cancelled about three years ago.
Here is one of my current favourites:
http://www.youtube.com/watch?v=qoUhQTvyXU8The comments are correct. It should have an attribution. It's by the Baltimore Consort from a CD called La Rocque'n'Roll: Popular Music of Renaissance France.