Taylor Swift's new docuseries got off to an emotional start. The first episode of The End of an Era, which began streaming Friday, December 12, on Disney+, opened with Swift, 35, getting choked up backstage in a huddle with her backup dancers during the final show of her blockbuster Eras Tour in December 2024. Swift reminded her crew that they "performed for over 10 million people in person" throughout the 149-date tour, calling it "the biggest challenge" any of them had "ever" undertaken.