Taylor Swift's latest single, 'I Knew It, I Knew You,' has officially launched ahead of the much-anticipated Toy Story 5, which hits theaters on June 19, 2026. The song, co-written and produced by Jack Antonoff, showcases a return to Swift's country roots, featuring an upbeat and nostalgic sound that aligns with the film's themes. The lyrics relate to the emotional backstory of Jessie and her original owner, Emily, last seen in Toy Story 2. While some listeners expected a more poignant ballad, the song's lively tone is well-suited for a children's movie, likely enhancing the film's emotional scenes. Critics have lauded the track for its engaging storytelling, with praise from publications like Consequence and Elle. Fan reactions on social media have also been largely positive, highlighting the lyricism and Swift's return to country music. The collaboration is seen as a strategic move by Pixar to attract a wider audience, particularly Swift's fans, and could position the song for an Oscar nomination for Best Original Song, following the franchise's history of nominations.