Well, she can't.

I can't think of one semi-decent performance of this song. (Studio Version, acoustics don't count here!)
It has good moments: the acapella Grammys intro, her singing during the middle 8 of most performances and... That's about it. The themes, the dancing, the dance break? Urg. Not even mentioning the fact her voice is Firework levels of bad at some points. I just can't with this song anymore.
