Joe Alwyn is credited with additional production on Taylor Swift's "august."
The song's production credits include Swift and Jack Antonoff, with Alwyn also listed in the track's production information. Alwyn was involved with Folklore under the songwriting pseudonym William Bowery on selected songs.
Alwyn's production credit is easy to confuse with his writing credits. He co-wrote "exile" and "betty," among other Folklore-related work, but the question here concerns the production credit for "august."
Swift and Antonoff remained the principal creative partnership behind the track. The additional credit reflects Alwyn's broader musical participation in the Folklore sessions rather than a vocal feature.