Katy Perry is giving fans a sneak peek at her new album Prism one track at a time. After releasing her second teaser track, "Dark Horse," on Tuesday, the singer has now announced that yet another track is coming: "Walking on Air" will make its debut September 30.
If you're an international musical superstar about to announce the follow-up to your biggest-selling album ever, why be coy about it? Katy Perry hired a gold-plated semi-truck to break the news for her.