Katy Perry achieved maturation with Prism, the 2013 album anchored on the self-empowerment anthem "Roar" and the club smash "Dark Horse." Considering how "Roar" scored the closing stages of Hillary Clinton's 2016 campaign, it would've seemed like a logical move for Perry to build upon its adult alternative affirmation but she's instead chosen to use "Dark Horse" as a blueprint for Witness, the long-awaited 2017 successor to Prism. Perhaps Perry shifted her approach after "Rise," the "Roar"-alike written for the 2016 Olympics that she also performed at that year's Democratic National Convention, failed to crack the Top Ten, perhaps she always planned to construct this album with electronic beats and synths, but Witness is so slick with synths it seems slippery.