At this point in the proceedings, someone generally introduces another angle: is a folk song necessarily folk music? For example, I am sure we all agreee with the statement that the version of the Foggy Dew as sung by Peter Pears with Benjamin Britten accompanying him on the piano is "a folk song". But is a recording of that performance(or the live performance) "folk music"? Or, for that matter, "folk song"? Or is it just "music of folk origin"? Hmm, some doubt creeps in,doesn't it?