Originally Posted by Anduin
See, I don’t even really care about that. For this sort of discussion, we’re talking about entertainers, not musicians per se. If Chic Corea faked it at a live show, I’d be disappointed. If Brittney actually sang live at a live show, I’d be gobsmacked.
I think you pretty well nailed it.
I think the Beyonce mime was more newsworthy because of the scale of the event and she has a strong rep as a vocalist.
As for music videos, the best of them don't bother pretending that they're actually playing - it's more like they use the visuals of a musical performance as the basis for abstract video art: