Mariah seemed to have some audio malfunction with the in-ear monitors before performing "I Know What You Want"
At 0:40 you can hear her repeating "i can't hear anything, i can't hear anything, i can't hear anythiiinnnggg"
If you pay attention you can still hear her talking throughout the performance untill she finally comes out but i can't make up what she's saying

http://youtu.be/6BxFU9kUSI0

Tbh I think she's hard of hearing because she's always having trouble with her in-ear aids.

The worst I've heard Mariah sing I think, she really shouldn't have performed, like come on

horrible vocals

I've been saying the same thing tv performances or appearances always exposes her there's always something going wrong .... I think it's because she doesn't rehearse for them for example i saw the behind the scene footage from when she performed beautiful with miguel at the hot 97 2013 show pr whatever ..... she literally got out of the car when the song already started and she was walking up to the venue with a glass of champagne while people were trying to put her mic back on and stuff