If I can act as devil's advocate here, I was in the Black Horse in Whitby this afternoon and one of the participants sang "Shoals of Herring".

I have to say I was reminded immediately of this thread.

No way of knowing if it was the same person, but he did sing it an a most unusual key, (and a most unusual style) and then had to keep referring to a sheet of paper for the words.

After hearing this, I can, to a degree, empathise with the musicians referred to in Nick's first post.