On his third full-length, the English dynamo shows the full wealth and range of his powers. ÷ is a ruthlessly melodic run through a staggering array of styles, further proof that Sheeran is a singer/songwriter for these musical times: a balladeer who can blur the lines between Celtic folk and hip-hop (“Galway Girl”) just as readily as he can summon big, festival-ready sentiments (“Castle on the Hill”), impassioned serenades (“Perfect”), and pulse-quickening pop (“Shape of You.”)