Much to agree with in the recent discussions.

I'm glad the digression into MacColl-bashing was brief, but I'm intrigued that there were claims of both the authenticity and the inauthenticity of his accent when singing in Scots. Is that perhaps because of his very distinctive and, arguably, not entirely natural singing voice, whichever accent he was using?

I agree with McGrath of Harlow: "How your voice comes out of your mouth is almost inevitably coloured by how the song came into your ears. It's remarkably hard to avoid that even if you try hard." I believe I am mostly successful in avoiding it nowadays, except when the song is in a different language or a substantially different dialect, when I either anglicise it or pronounce it as authentically as I can manage.