well, I am sure with greg on this. Lots of very nice music gets called 'folk' just because it is a convenient term. Folk NEEDS to be more narrowly defined, or it ceases to mean much of anything.

And I suspect greg will agree that country blues grew up in a very different way than urban blues, and thus has 'priority', for lack of a better term. It is not nearly as wide a difference as "Celtic Rock" from Celtic trad, but .....