Taylor Swift‘s “I Knew It, I Knew You,” written for the Pixar film Toy Story 5, has debuted at number one on the Billboard Hot 100, becoming her 15th career chart-topper and her first to arrive on the back of an animated film soundtrack.

The song reached the top spot before Toy Story 5 even opened in theaters, driven by a combination of pre-release streaming, radio play and downloads that followed the track’s release earlier this month. It is the fastest a Toy Story soundtrack song has ever charted, and its debut at number one reflects Swift’s current standing as one of the few artists capable of generating that kind of consumption volume without a tour or album campaign attached to the release.

Swift wrote and performed the song after being approached by Pixar, who were looking for an original piece that could bridge the film’s emotional themes across generations of fans. The song draws on the nostalgia of the original Toy Story — which opened in 1995 — while speaking to adult audiences who grew up with Woody and Buzz and are now bringing their own children to see the fifth installment.

Music analysts who tracked the song’s first-week performance said its streaming numbers were unusually spread across age groups, with significant play among listeners over 35 — a demographic that doesn’t always drive chart numbers in the streaming era. The cross-generational appeal mirrors the film itself, which critics have described as built for both the children in the audience and the parents sitting beside them.

Swift’s 15th number one extends a run that has made her the most chart-dominant solo artist of her generation. Her previous chart-toppers have come from full album cycles, crossover moments and cultural events attached to her Eras Tour. A film soundtrack song reaching number one without any of that infrastructure is a different kind of result and says something about both the audience’s appetite for her work and the anticipation surrounding Toy Story 5.

The song’s success is likely to amplify Toy Story 5’s opening weekend projections, which were already strong. Box office analysts had the film on track for a domestic opening above $180 million before the chart news; the added cultural conversation may push that number higher.

June has been a strong month for entertainment broadly. Scary Movie broke records earlier this month with a $55 million opening, showing that theatrical audiences are engaged. Meanwhile, the Knicks won the NBA Finals in New York on June 17, adding to what has become a genuinely packed cultural calendar.

Swift’s tie-in with Toy Story 5’s release has generated weeks of pre-release coverage. The Billboard Hot 100 confirms the debut position with this week’s official chart update.

Whether the song stays at number one into next week will depend on how audiences respond to the film over the long Juneteenth weekend. But the debut itself is already a milestone — and another entry in a run of commercial achievements that shows little sign of slowing.