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Song

I Knew It, I Knew You

Non-Album Songs · 2026 · Track 10
Co-written
Written byTaylor Swift, Jack Antonoff
Produced byTaylor Swift, Jack Antonoff
Also known as: IKIIKY
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Stated inspiration
Taylor saw part of Toy Story 5 in February 2026 and felt immediately inspired to write the song. Andrew Stanton, who wrote the movie, had approached Taylor years earlier about writing a song for a Toy Story 5 focused on Jesse.

Notable lyric

I knew you through the daze of the blades of the grass in summerParachutes for the free fall of being youngerI memorized the sound of your bare footsteps…”

Written and produced by Taylor Swift and Jack Antonoff. Released as a single from the Toy Story 5 soundtrack and debuted at number one on the Billboard Hot 100. Taylor performed a surprise live version at the Toy Story 5 premiere alongside Randy Newman singing You've Got a Friend in Me. Three versions exist: the standard release, a piano version, and an acoustic version. Angela & Uncle Jerry place it in the Toy Story musical tradition as the third movement: You've Got a Friend in Me represents the joy of childhood, When She Loved Me represents memory becoming grief, and I Knew It, I Knew You represents memory becoming hope. The song's score of 100 was given by guest grader Jillian, Uncle Jerry's granddaughter, a Toy Story fan and Swiftie who loved the song; Uncle Jerry invited her to grade it in his place rather than using the show's usual five-dimension grading. Community readings add three layers. Several readers note the title sharpens after the bridge: the friendship felt so intense that its ending made the speaker doubt it was ever real, and the reunion confirms she did not invent it. Beyond the Jessie/Emily reading and the masters reading, readers add a third address, Taylor singing to her own childhood self, having found her way back to the joy that first drew her to music. And one reader situates the song in a catalogue-wide thread on staying, leaving and coming back, Stay Stay Stay venerating staying, it's time to go admitting leaving can be a positive, So Long London returning staying to the good, with this song adding return as a fourth state; the hosts endorsed the thread on the post.