Copying...

So.

I've just had my eldest boy introduce me to Tom Lehrer's Lobachevsky - which I first heard, thanks to Neil Frowe, in 1976, in Collingwood.

But they both took just the same amount of pleasure in sharing it with me. And both enjoyed singing along (or was that me?).

What Neil couldn't know of (he only had the records) was the YouTube video of Tom Lehrer teaching Maths (derivation) to a tune from Princess Ida.

Oh, yes, he also couldn't introduce that song to me in 1976 'cos it hadn't happened at that point. It came from the '80s. Causality is a bitch.

Anyway, despite loving my eldest, I have to put on record: "One man deserves the credit...."