But why do you want it to be note for note perfect? You know what the records sound like so why do you want them to sound exactly the same? Yes, it's difficult to be so note perfect all the time & their standards are very high, but why can't they relax a bit more even if there is a wrong note occasionally?
What would be wrong with the occasional bit of spontaneity?
I really am off beam here, it seems.
Although I agree with EK (see previous page). Little differences, no matter how subtle, remind you you're at a live performance.