The most you can ask of a summer is that it’ll last all summer long. And that’s enough for Canary Islands, Spain-based Daria Maxima on “Forever for Now,” her rousing breakout single that celebrates the fizzy impermanence of a warm-weather romance—while leaving the door open to something more lasting, just as this surefire dancefloor smash hints at a long and illustrious career for the wunderkind behind the mic.