Taylor Swift surprised the crowd at The 1975’s concert in London on January 12. The superstar performed two songs, including the live debut of “Anti-Hero” and a cover of The 1975’s “The City

Taylor Swift just gave her first public performance of the new year.

Swift surprised the crowd at the 1975’s concert in London at the O2 Arena on Jan. 12, performing an acoustic version of her latest single, “Anti-Hero,” from her brand-new album, Midnights, live.

The 33-year-old Pennsylvania native entered the stage to the screams of adoring fans wearing a silver dress and matching heels. After a tech handed her a white guitar, she looked out into the crowd and asked the fans in attendance if it was okay for her to sing them a song.

“I was thinking I would do one I’ve never played live before,” Swift added as she began to strum the opening notes of her latest single. “It would be so presumptuous to say, ‘if you know it, sing it.’ But if you do…” she smiled, continuing the performance.

In addition to performing “Anti-Hero,” Swift treated fans of The 1975 to a cover of the band’s song, “The City.”