Taylor Swift has had a very big year. Her career-spanning Eras Tour is on pace to become the biggest and most lucrative concert tour in history, and the subsequent concert film set box office records. She's been streamed on Spotify globally more than any other artist in 2023, and was named Time Magazine's Person of the Year. Today, in honor of her birthday, Taylor Swift is releasing The Eras Tour film digitally, so we thought it was the perfect time to revisit our conversation about what made the tour such a juggernaut.Subscribe to Pop Culture Happy Hour Plus at plus.npr.org/happyhour