Everyone knows Carly Rae Jepsen from “Call Me Maybe,” her 2012 song of the summer. She was the twenty-seven-year-old Canadian Idol finalist with the Zooey Deschanel bangs who was part of the Scooter Braun/Justin Bieber cabal. No one expected to hear anything from her again. Which is why her new fabulous album E•MO•TION (Interscope) comes as such a great surprise. With songs written by Devonté Hynes, Sia and Rostam Batmanglij of Vampire Weekend, this epic, light-a-sparkler-with-your-soulmate pop music takes influence from the eighties synth sleaze of Rod Stewart and Carly Simon. It’s an album chock full of effervescent Taylor Swift hooks without the fraught identity construction. Best of all, it positions Jepsen as an actual grown up whose previous coyness is left behind for indecision and red-blooded lust. (“I didn’t just come here to dance, if you know what I mean,” she insinuates.) If there ...