The written page could never convey such subtleties with any guaranteed success of accuracy...

Yer right, at least if it is a human trying to notate it.

A while back I did a free trial of a 'sound to notation' piece of software. I tried it out with an a capella song. You would not believe the slides and slurs in my singing, that's apart from the timing. The software was able to notate it but I doubt if any musician would be able to reproduce it.