and in a moment of madness shouted out, "Gershwin!". I still feel embarrassed over that incident. ===

Why? What was mad or embarrassing about setting right someone who had committed an inaccuracy? Accuracy Matters - & you were performing a valuable service. I would have done the same. [Mind you, on another forum-website that I contribute to, another regular has commented that "MtheGM's pedantry is legendary". I am not sure that she intended a compliment; but I have taken it as one.]