Thank you. You've said a lot of the things I was thinking about but not able to quite get out. Folk-singer may be becoming an obsolete term, we'll have to go with People-who-sing-folk-songs, which is something of a mouthful.I meant to write more but I'm having difficulty thinking at the moment as I'm listening to P.D.Q. Bach's Oratoria Oedipus Tex and it muddles me. It is a wonderful modern parody of Baroque music. An example perhaps of bizarre genetic diversity.