@GDatria715 my understanding is that some can be up to all. If all parrots are clever, than some are clever. You could say, its not only the case that some parrots are clever.

My problem comes from seeing the inspired performance as necessary for the good show, not the other way around. Why is that incorrect? Is it the "if" condition? I just dont understand how its sufficient for a good show rather than having both sophisticated listeners and inspired performance as necessities for a good show.