This draconian restricting of what people should be allowed to sing (!!) that seems to be David's hobby horse has been discussed many times before. I would suggest that David read a bit in previous threads, for example HERE, and try to bring himself up to speed.

Someone posted an article previously on one of these threads in which Peggy Seeger gives some background on the "sing from your own culture only" controversy. Rather that try to hunt down the previous posting, I'll link to the article HERE.

If you haven't already read the article, David, I suggest you read it now. If you have already read it, I'd suggest that you read it again.

Don Firth