>>All this is very strange; the battlefield appeared to be littered with dead windmills carefully erected by those who would persuade us (apparently) that neither skill nor practice is needed to sing folk-songs (or am I guilty of erecting a windmill of my own? – it's a little hard to tell who is saying what among so many people not really saying anything).

Don't think that has been any part of my personal view on this thread but what the hell - it's a thread of huge sweeping statements which was why I tried to give some examples.

>>A singer should be able to sing – hold a tune, memorise the words, and understand the song enough to communicate that understanding to the listener.

I know someone who can definitely sing in tune. He knows the words. He understands the songs he sings. He is a terrible singer. (I can send you an example if you want)

I know you keep repeating it (10 times or whatever) but you're not really being clear. Most of the people I come across can do most of those things most of the time but not all are necessarily good singers.