Re: Beyonce lip syncing
Lip syncing is an attempt to defeat Murphy's Law ("Anything that can go wrong, will go wrong"). At a major event such as the Super Bowl or an inauguration, you don't leave anything to chance. We live in a pre-recorded society these days where everyone expects perfection, so lip syncing shouldn't be a shock to anyone.
..and honestly, half the bands I hear SHOULD be lip syncing.
and p.s., Yo Yo Ma faked his cello performance in 2009 at the inauguration ceremony. So yes, even great musicians do it.