Songwriters L Russell Brown and Sandy Linzer allege that the opening melody to the hit single, the longest-running Top 10 song ever by a female artist on the US Billboard Hot 100, is a “duplicate” of the melody to their 1979 song Wiggle and Giggle All Night and their 1980 song Don Diablo. “Defendants have levitated away plaintiffs’ intellectual property,” lawyers for Brown and Linzer wrote in a...