What a great discussion this is. Lots of great tunes here, and many of them copyright-free. The only one I can think of so far which has not already been mentioned, if I remember correctly, is "I Fought The Law" by the Bobby Fuller Four. There probably are others. Oh yes, "The Ballad Of Paladin". And what about "Wyat Earp, Wyat Earp, brave, courageous and bold..."