Taylor Swift is fond of recruiting surprise guests for live appearances on her Red Tour, and since Nashville means country music, the singer-songwriter/man eater invited fellow country heavyweight Luke Bryan up to hit the stage Thursday night in Music City.

"This is an artist everybody really, really, really likes," Swift said, teasing the screaming crowd before bringing out the 37-year-old Bryan. The two harmonized and hopped around the stage (no, seriously, watch above—lots of hopping) while performing Bryan's 2011 No. 1 single "I Don't Want This Night to End." "He flew across the country to spend his only day off to surprise you here tonight," T. Swizz said of Bryan. Awwww.

Bryan is just the latest guest star on the Red tour: Swift sang "You're So Vain" with Carly Simon, rocked out with Tegan & Sara on their latest hit "Closer" and dueted on "Anything Could Happen" with Ellie Goulding. Even J.Lo joined the party! It's all documented in this behind-the-scenes mini tour doc.