I LOVE Nicole ever since PCD and I've seen her live but this was a bit of a mess.
The sounding was just wrong. The backing track was way too loud and at times she was blatantly miming or singing with her mic volume at -1. see: 1:02, 1:14, 2:05-2:08
I KNOW she can sing live and she proved that in the bridge, not sure what went wrong.
Also the dancing at the end was average. I'm not sure why she didn't give 110%. Maybe lack of time rehearsing or w.e - If anyone REALLY cared they would be dragging her to the pits but i'm sure she'll make it up at the next performance.
The last minute was great but, considering she's on par with people like Beyoncé & Gaga (in terms of dancing/live performing) she needs to get her ass out there and turn up for this era.
slayyyyyyer
!!!!!!!!!!!!!!!!!!!!!!!!!
the power of Sherzinger 
no one else could pull that sort of outfit off