I absolutely adore this cover. Vocally it is flawless, and those wails at the end of the song, as well as the head voice, make this one of my favourite fan requests. She's also gotten rid of that annoying breathing sound she does sometimes...
Honestly she never ceases to amaze me. The song starts at 0:55 if you want to skip the intro.
Lol @ 1:01 - "SING IT GARL!" Sounds like she's from ATRL