The Uptown Funk hitmaker penned the track, which is sung by Ryan Gosling's Ken character in the film, with fellow musician Andrew Wyatt. Ronson believes its lyrics, which refer to Ken dealing with his unrequited love for Margot Robbie's Barbie, have had an effect in the real world. "I know I'll sound like David Brent, but the song helped young boys," he tells British newspaper The Times. "My friend's eight-year-old got broken up with and he said, 'It's OK, because Ken got broken up with by Barbie,'...