Get "Dark Horse" feat. Juicy J from Katy Perry's PRISM: http://smarturl.it/PRISM Do you want to play with magic? Insert yourself into the video using #DarkHorseCam: http://andCam.com/DarkHorse THE PRISMATIC WORLD TOUR coming to you soon: http://www.katyperry.com/events Follow Katy Perry: http://www.katyperry.com http://youtube.com/katyperry http://twitter.com/katyperry http://facebook.com/katyperry http://instagram.com/katyperry