We have word.
Sorrows is rock.
Shape of love is a ballad.
Sky high is one of those uptempo tracks. (person said age kyoku, so probably from original vision)
I wonder if Sorrows and Shape of love were where she was like "Ok, I have to change the concept now." and go in her usual direction.
They hosted it at an outdoor-ish venue, it looks like.
https://twitter.com/KAZUSTYLE2015