Unlikely that it was the same guy as the person I originally referred to it knew the words perfectly without any prompting (and sang it very well without any help from anyone).

What's a strange key for Shoals of Herring? I sing it in G# personally. Does that mean I'm at risk (with justification - from the tone of your message, Murray) of being drowned out by some twat who thinks he knows 'best'?

I was in the Black Horse myself but left before any singing started.