If you've been a fan of Pop Music since at least the '90's then you are familiar with the vocal ability (or past presence) of Christina Aguilera.
But Sunday at the AMA's.. many fans, especially Whitney fans were not impressed with the singer's flat and sometimes pitchy performance to the legend.
Now, Christina has a history SLAYING Whitney songs in the past - and this was just NOT IT. Check out her previous performances:
Is it possible, that with age singers lose vocal ability?
What do you think of Christina's tribute?