Ah, now - you see - I'd fail your tests....can hum any number of pieces perfectly, but put a name to them? Er, that would be a no.....
One gorgeous concerto v. another? Nope, all gorgeous. Differentiate my carefully-picked eight records? P'raps, p'raps not!
Weird, I think....has to be brain-wiring.....because although one piece of unforgettable music doesn't appear to have a definite name, I can see one mis-spelt word in a paige of carfully tiped A4....