Which songwriter collaborated with Taylor Swift on “august”?

Jack Antonoff collaborated with Taylor Swift as a songwriter on “august.”

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

The collaboration helped shape the song's layered sound: soft-rock guitars, keyboards, strings, and dense reverb support the narrator's wistful recollection. Antonoff also co-produced the recording with Swift and Joe Alwyn.

Aaron Dessner is a frequent Folklore collaborator, but he did not co-write “august.” That distinction causes confusion because Dessner produced and co-wrote many other songs on the album, while Antonoff was the credited songwriting partner on this particular track.