Harry Styles has used his solo career to lean into the music of bygone decades before, with his first two albums heavily drenched in the rock singer-songwriter stylings of the ’70s. His new single, too, has a flair for music as it was — but it’s far from a rerun of those previous albums. “As It Was,” released late Thursday, sounds like it has its roots in the synth-pop of the 1980s. You could even say he’s vaguely in a Depeche mode… or having an A-ha moment.