Every now and then, in one of her music videos or during a heady, live performance, singer Carly Rae Jepsen will close her eyes, raise her hands above her head, and sway her hips. It’s not choreographed, or at least it doesn’t appear to be. Instead of crisp synchronicity, Jepsen opts for fluid, extemporaneous groove. She is singing to us and moving with us — until those fleeting moments between verses or at song’s end, when she seems to have retreated, not out of reach, but rather into a full-bodied state of emotive receptivity. In this brimful pause, she is both steward and beneficiary, theorist and pupil, basking in the superabundant, prismatic feelings her music elicits.