I didn't even realize I was swaying and crying to the TOTGA performance

She isn't the one doing the high notes on IKAG, those are her background singers, you can clearly see it throughout 22:00-22:25

the one that got away/thinking of you was beautiful. but for the most part, you can tell she struggles vocally when she has to move around and with some tougher songs. she's never been the best vocalist but if I was in that crowd I'd probably enjoy myself because it was a fun performance.

TOTGA and TOY mash-up is soo amazing

Amazing. The TOTGA/TOY performance is simply incredible

The backup does sing some high notes, but Katy also does most of the screamed rock-ish type vocals. She has done it multiple times, basically on all of the rock version performances of this song.

Amazing show! I loved I Kissed a girl. I loved how she's starting to show her sexiness. The world needs to see more of her beauty, tbh.

Her live vocal has improve a lot, I'm totally ok with her live now.
(But I will always waiting for her cracked moment )
And I guess I'll never get the jumping rope idea in Roar.

Even she's not a vocal powerhouse, I would still go to see her if I have chance.
Her show is really an enjoyment and you could have a lot of fun.
It just like a huge karaoke, you can sing alone with her and dance whole night!!!!