Taylor Swift invited her opening act and close friend Gracie Abrams on stage for her penultimate acoustic set of the record-breaking tour.

After her “I Can Do It With A Broken Heart” performance, the era’s entertainer twirled around in her purple and blue dress and strutted toward the microphone.

“Vancouver, welcome to the acoustic set,” Swift said, putting her hands in the air as the audience’s shouts and cheers echoed through BC Place Stadium on the second night of the tour in Vancouver, Canada. She explained that each surprise set includes a unique selection of songs on guitar and piano, before adding that she sometimes brings along a special guest.

“You met my friend Gracie earlier,” Swift teased about Abrams, who performed for her on tour. “She’s also my friend, and when I went on the Eras tour, I kind of made an invisible decision to invite artists on that tour that felt like family.”

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Swift, wearing a shimmering black dress, encouraged the 25-year-old starlet to join her in singing a mashup of two of her songs. They mixed Abrams’ “I Love You, I’m Sorry” and Swift’s “Last Kiss.” This is the fourth time Abrams has joined Swift on stage during the acoustic portion:

• Cincinnati, July 1: “I miss you, I’m sorry”

• London, June 23: “We.”

• Toronto, November 16: “We.” mixed with Swift’s “Out of the Woods”

• Vancouver, December 7: “I love you, I’m sorry”

Abrams bowed to Swift at the end before hugging her twice and returning to the center diamond to disappear onstage. As wristbands in the audience glowed bright purple, Swift sat down at the piano to play a mix of “The Tortured Poets Department” and “Maroon” from “Midnights.”

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“Okay, I want to do this again on this tour, one last time that we sing together,” Swift said before the bridge of “Maroon.” The 60,000 fans joined in and sang along.

What will happen on the last night? If Abrams doesn’t sing with Swift, will there be another special guest? The Eras Tour concludes on Sunday at 6:45 p.m. PT / 9:45 p.m. ET.

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This article originally appeared on Nashville Tennessean: Taylor Swift invites Gracie Abrams to sing her final duet on the Eras Tour