It would be nice to get some reasonable alternatives to consider from Glueman, Sinister Supporter (can't get my tongue around his new persona just yet,) et all, but the latter dropped the ball in such a spectacular manner on the '1956 and all that' thread that it will be some time before I can take him seriously again.

Nice one, Jim. Hardly the wonder folk's dying on its arse with such charming sleights being hurled around without provocation.

Otherwise, the 1954 definition has been quoted in full on Mudcat several times today. Here's another:

All music is folk music. I ain't never heard no horse sing a song. - Louis Armstrong