Taylor Swift and Hayley Williams debut "Castles Crumbling" at The Eras Tour

Since the start of the European leg of shows on The Eras Tour, with Paramore as main support, fans have been waiting for the live debut of "Castles Crumbling", which features on Speak Now (Taylor's Version). The track is a duet with Paramore vocalist Hayley Williams.

"Since Speak Now was all about my songwriting, I decided to go to the artists who I feel influenced me most powerfully as a lyricist at that time and ask them to sing on the album," Swift said, announcing the album, which also features Fall Out Boy.

here’s the best video i could find of taylor swift and hayley williams performing castles crumbling as a surprise song in london yesterday on the eras tour ENJOY! pic.twitter.com/CHGgPSbLpj

— ale (@daylightsab) June 23, 2024

Introducing the song on the night, Swift said: "In the process of re-recording, I was trying to reach out to artists that I'm such a fan of, or in the case of one of the albums – specifically on Speak Now – I reached out to people who had been so influential in my music and my writing and I asked an artist who I'm such a huge fan of, to collaborate on one of the songs and she said yes, and then I asked her to tour with me and she said yes, and London – we are so lucky because when I asked Hayley Williams to come out and sing "Castles Crumbling" with me, she said yes!".

During the song, Swift smiles in awe at Williams and takes a moment to praise her, saying: "I love you so much. You're so good, it's crazy. I cannot believe I get to be on tour with Hayley; I can't believe she's ever talked to me one", before Williams screams adds: "You're my longest music friends, thank you!".