Taylor Swift got what she calls "songwriter zoomies" after screening Toy Story 5 and wrote and recorded the end-credits song "I Knew It, I Knew You" in a single eight-hour marathon on the same day. She told her social followers it was "one of the most fun days of my life," and she's not wrong—it's a masterclass in turning corporate synergy into genuine art. The track, already breaking records, features a music video starring Joan Cusack's Jessie, and Swift herself...