Sorry - missed the last question
As far as I'm concerned we should be concerned with what folk songs the people sang - the people sang everything from opera to advertising jingles and football chants
That makes any ration discussion on any specific type of song so fast as to be unapproachable
The fact that chosen the other is, as far as I am concerned, tha Achilles Heel of the book

Sorry about the typos above - my new keyboard is playing up
Jim