UBIQUITY A No. 1 dance-club hit, “Clarity” has also turned up on Glee and The Voice.
LONGEVITY Originally released last October, it’s been clawing its way into public consciousness for the past four months.
SOCIAL POWER Zedd worked on Lady Gaga’s forthcoming album, and he’s been pushing “Clarity” hard on the dance circuit.
ROOTS Apparently, Ellie Goulding’s “Lights” is now a genre.
CONTROVERSY None so far.