She did pretty good. It was beautiful and she stayed in her vocal range. At least she knows what she has and how to work with it. We are not here for singers trying to reach who knows what notes by screaming and yelling. That type of renditions only Whitney, Mariah or Celine can do it. If u are not one of them it´s better to do it beautifully like Keri did. Rihanna or Xtina could takes notes, the former just needs to retire or leanr how to sound beautiful and Xtina needs to stop screaming, that big notes aren´t for you honey, leave it to the other 3 I mentioned