Some years don’t fade—they hover. And 2016 is one of those years that still shows up uninvited, sliding into your playlists like it pays rent. If the cultural mood is looping back (again), then the soundtrack has to come with it: the pop confessionals, the late-night bangers, the gleeful earworms, the songs that made you text someone you absolutely should not have texted. Here are the 21 tracks that defined the year—and if 2016 is truly returning, they’re not optional.