In reply to 310Shake.

What audiences don't realise is that a host of things can throw even the most prepared singer off vocally and have them sounded a mess moments before they hit the stage.., a dancer who moments before the stage sprays themself with deodorant, hairspray or perfume can have your throats inflamed in seconds. Beyoncé has a strict list of demands including which scents can and cannot be sprayed backstage before she performs, but not everyone has her clout. Xtina sounded a mess throughout the Whitney tribute so I'' guessing she was either ill or her nasal/vocal folds were inflamed. ^The above shows she still has it in spades so I can forgive her previous poor showing.