Well, depending on the part of Spain, you could have gone for 'Ruth' or 'booth'
or even 'sleuth', 'truth', 'youth' and 'vermouth'. But the Loos rhyme was
better.

I thought the 'z' had a slightly harder sound than that, somewhere between a 'th' and a 'dz'. But what do I know?

I'm sure something could be done with 'truth' and 'vermouth'. Or possibly 'in a night club booth', although that's more Liz Jagger's style. I did toy with the idea of calling it "Who Is Cruz?", suggesting a pronunciation of "Crew-iz", but that's just getting too damned ambiguous.

You're right, of course; the rhymes I suggested wouldn't be quite right.

This is the 21st century. Your poem needn't rhyme at all in this liberated modern era. And as far as I can tell from my deep studied analysis of one Spanish poem which I skim-read about half of, the Spaniards don't bother with rhyming properly as they can rely on every other word ending in the sound "or" anyway.

i.e.

Puerto puerto amor
Ricardo puerto dolore
En garde, en garde, toreador.

etc.