To me Dark Horse and Walking on Air sound like Rihanna's Stay versus Right Now.
Dark Horse is unique sounding and Walking on Air is basic sounding (as a Katy Kat)
I have so much interest to listen this album, I mean, it's completely fresh Katy Perry, no Teenage Dream 2.0, and I don't really know what to expect since all from what I've heard is different
I wasn't here for Roar, or anything on TD. Dark Horse sounds phenomenal though! I don't care for Walking on Air though. But seriousy, I really want to listen to Dark Horse