“I’m Just Ken,” the showstopping number performed by Ryan Gosling in “Barbie,” took Mark Ronson and co-songwriting partner Andrew Wyatt just two days to write. “But we needed the ...

Ronson and Wyatt, who won the 2018 Oscar for cowriting “Shallow” from “A Star Is Born” with Lady Gaga and Anthony Rossomando, started with the song “Dance the Night,” which Ronson ...