Which co-writer and producer worked with Taylor Swift on “august”?

Jack Antonoff co-wrote and co-produced Taylor Swift’s “august.”

Swift and Antonoff had already collaborated on songs for 1989, Reputation, and Lover before working together on Folklore. For “august,” Antonoff created the instrumental first and sent it to Swift, who wrote the lyrics intuitively in response to the music.

The production credit also includes Joe Alwyn, who was credited alongside Swift and Antonoff. That means the question must distinguish Antonoff’s combined writing and production role from the song’s complete production team.

Antonoff contributed much more than a name in the credits: he played or programmed several instruments and helped shape the track’s shimmering, layered sound. His partnership with Swift became one of the defining creative relationships of her later studio work, particularly during the Folklore and Evermore era.