if I want to listen to pop music I can get as much as I could possibly need by switching on the radio.

Yeah but, if a Folk Singer sings a pop song in a Folk Club (as my wife does from time to time) then that becomes uniquely folk according the idiosyncratic characteristics of the singer. Dig? Hell, I've got a recording of Seamus Ennis singing Football Crazy, and what about this?

http://www.youtube.com/watch?v=fXAeL5qe5_o

I have listened to the music you have posted as "folk" or "feral folk". Well, you call it folk. I don't. I can define what I call folk in terms of observable characteristics. Could you list the characteristics by which your posted music is defined as "folk"? Or, indeeed, "feral folk"?

Mostly I call it folk because whilst it is 100% improvised it is nevertheless dependent on the structures, drones, modalities and rhythmic patterns of Indo-European traditional music which are hard-wired into my musical psyche and which must, as a consequence, emerge through the music however so obscure such considerations might first appear. Feral Folk is indicated by the wilderness such a music must, out of necessity, exist in; seeking back to well-springs (what the 1954 Definition calls rudimentary beginnings) of a music whilst at the same time looking forward.