Two years after its release, Tomorrowland’s biggest remaining fan appears to be Katy Perry. In the video for her new “purposeful pop†single “Chained to the Rhythm,†Perry wanders a retro-futuristic amusement park full of cotton-candy-colored symbolism. The video was directed by Mathew Cullen, who also did “Dark Horse†and “California Gurls,†and, see, the amusement park is called “Oblivia,†just like how we Americans are oblivious. Bet you didn’t see that coming.