Taylor Swift wrote an original song for "Toy Story 5." Pixar; Neilson Barnard/Getty Images Imagine a family-friendly brand with the initials "TS" that floods the market with bespoke merchandise . Are you thinking of " Toy Story " or Taylor Swift ? For now, at least, they're one and the same. Swift confirmed long-simmering speculation this week when she announced her new single for the " Toy Story 5 " soundtrack, "I Knew It, I Knew You," will be released on Friday. "You knew it! My new original song "I Knew It, I Knew You" for Disney and @Pixar's @toystory 5 will be yours on June 5th," Swift wrote on social media , making a nod to her most devoted detectives, who had collected Easter Eggs from across the internet that hinted at the collaboration for months. "I've always dreamed of getting to write for these characters who I've adored since I was a 5-year-old kid watching the first 'Toy Story' movie," Swift continued.…