Fans quickly noticed that Swift and her frequent collaborator, Jack Antonoff, are both listed as cowriters on the album's fourth track, "1 Steps Forward, 3 Steps Back."
By all accounts, Rodrigo's song interpolates "New Year's Day" rather than samples it directly, which means she re-recorded the piano line - either by herself or with her own studio musicians - instead of copy-and-pasting the original recording.
Fittingly, "1 Steps Forward, 3 Steps Back" contains a sneaky Easter egg for fellow Swifties. The common idiom is actually "one step forward, two steps back," but Rodrigo wrote "three" instead, likely because 13 is Swift's lucky number.
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