It makes you realise just how great this song is - no disrespect to Sky but vocally she aint up to Lana standard but it still sounds fantastic. The sign of brilliant songwriting ability.
Sky has an incredible range, I'd even say better than Lanas range, but theres two problems with the cover. Her voice didn't suit it and her singing isn't up to par like usual. Which is surprising, considering it usually is and should have worked for this song.
If she ever wants to cover Lana again, she should do national anthem.