Add Dierks Bentley's name to the list of Taylor Swift's 1989 World Tour special guests. The country star joined Swift at her show in Kansas City, Mo., on Monday night (Sept. 21), to perform his song "Every Mile a Memory."

"Every Mile a Memory" was co-written by Bentley and released as the first single from his third studio album, Long Trip Alone, in July of 2006; it became Bentley's fourth No. 1 hit in November of that year. Press play on the video below to watch a snippet of Bentley and Swift's performance: Bentley takes the lead on vocals, with the country-turned-pop superstar adding harmonies during the chorus and both artists encouraging the crowd to wave their arms along to the melody.

"Thank you @dierksbentley for singing "Every Mile a Memory" tonight in KC!!" Swift writes on Instagram. "You've always been so nice to me, and I've always wanted to share a stage with you. So much fun!"

Monday night's concert was one of two at Kansas City's Sprint Center for Swift. Bentley has spent his summer on the road, on his 2015 Sounds of Summer Tour, with Maddie & Tae, Kip Moore and Canaan Smith serving as his opening acts.

Four other country acts have shared the stage with Swift during her current tour: The Band Perry performed "If I Die Young" with Swift at a mid-September concert in Indianapolis, Ind.; the Dixie Chicks‘ Natalie Maines sang “Goodbye Earl” at one of Swift’s Los Angeles stops in late August; Sam Hunt performed “Take Your Time” at a mid-July show in Chicago; and during a June concert in Pittsburgh, Little Big Town came out to perform “Pontoon.”

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