Yes, I remember all that bellum, bellum, bellum, belli, bello, bello, etc. But I also remember that every brass bander (now there's a cheeky challenge!) I've ever known called more than one euphonium euphoniums. And I'm a professional speller, punctuator and grammarian, as well as a writer and critic of style books. I can out-pedant the best of you! It's a question of communication...

alan