Max Martin is credited with playing keyboards on every track of Taylor Swift’s The Life of a Showgirl. He is also credited as a producer and songwriter across the album, alongside Swift and Shellback.
Martin’s keyboard credit reflects the album’s polished pop construction, where synthesizers, piano parts, and programmed textures are central to the arrangements. His partnership with Shellback also reconnects Swift with two producers associated with some of her earlier mainstream pop successes.
Shellback is another plausible answer because he contributed bass, guitar, programming, drums, keyboards, and other instruments. His keyboard parts, however, are not listed for every track in the same way Martin’s are. Jack Antonoff and Aaron Dessner were important earlier collaborators but are not the answer to this album-wide keyboard credit.