Katherine St Asaph: Behold (the simplification of) the era: America watches Eurovision, HBO’s several years into a swords opera, fashion is smitten with floor-length elf robes, everything is dystopia, Celine Dion is back, and Katy Perry is also back and fits right in. A scatter of trap percussion dates this alongside “Kiss It Better,” but otherwise this is full symphonic power ballad, and if I’m on record anywhere saying Perry’s voice best fits Matrix-y pop-punk, mea culpa. Her kitten-at-a-scratching-post cadence suits the waify heroines that culture casts and fans imagine in these stories, and if she doesn’t (or can’t) go for the final high note this so clearly needs, neither did Conchita Wurst. The lyrics are nothing — if she’s beyond the archetype, why does she then list every single one? Are we battling or transforming or sportsing or Jesuslazarusphoenixing? — but the drama is shameless and palpable and all this needs.