I don't love it, it's way too sia, and I can't stand her. It's like she's put herself into songs with one theme and they're all so basic. But God it's LIGHTYEARS better than HBS. This ones pretty catchy too
Those vocal ad libs after the bridge has to be Kelly idea, not Sia. Sia has a powerful voice but her belting range isn't close to Kelly's. Kelly probably threw them in there cuz it felt natural to her to belt.