Wrong link. This is more informative:

http://en.wikipedia.org/wiki/The_Money_or_the_Gun

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This is, of course, a perfect example of Traditional Popular Culture, in which such reference points or so well established that the components become organic in & of themselves and musical creativity is a matter of interpretation and subsequent diversification. If Folk Music really is a matter of Folk Process and derivation, then you've got that in spades right here...