Okay I really don't listen to Katy, she is not my cup of tea so Imma be harsh.
Legendary Lovers -

Birthday -

Unconditionally -

Nice, but typical Katy
This Is How We Do -

horrible

International Smile -

Ghost -

I like it
Love Me -

This Moment -

Double Rainbow - kinda nice
By the Grace of God -

annoying
Spiritual -

It Takes Two -

Choose Your Battles - I like it, not too much tho.
Ghost is the best for me.