Charli XCX has debuted a new song written about SOPHIE, titled ‘So I’, live while performing at Billboard’s Women In Music event – watch pro-shot footage of the song below.While at the Billboard Women in Music 2024 event in Los Angeles on March 6, the singer-songwriter took to the stage to perform an unreleased track, ‘So I’, live for the first time. The song was written in memory of her close collaborator SOPHIE, who died in 2021.