International Smile
This Moment
It Takes Two
Choose Your Battles
Edit: To this day, I still cannot get into It Takes Two or Choose Your Battles. This Moment and International Smile are okay.. Not bad songs by any means but they're nowhere near as good as Katy's best songs. Overall, PRISM is a step down from Teenage Dream and One of The Boys (excluding some gems like LL,WOA, DR, BTGOG).