Marc and Sharon Costanzo share a lackadaisical vocal affect-it sounds like they hit the studio directly after getting burned on the beach-but where so many slackers couldn’t be bothered to shape their slothfulness into hooks, Len cares deeply about leisure: They’re committed to wasting away the hours that make up a dull day. Its foundational sample of Andrea True Connection’s disco classic “More, More, More” reveals itself as a grounding mantra, then the bliss goes widescreen once Len crash into the verse. The song comes into view slowly, like a mirage shimmering on the edge of a sun-bleached horizon. Somehow, a pair of Canadian siblings managed to capture the essence of Southern California in a single that turned into a summertime perennial. Of all the great one-hit wonders of the ’90s, Len’s “Steal My Sunshine” might be the most enduring and the most inexplicable.