Luke Bryan rocked Nashville with the launch of his 2017 Huntin,' Fishin' and Lovin' Every Day Tour at Bridgestone Arena over the weekend, and he brought out a very special guest for Saturday night's (May 6) show.

In between live performances from his own catalog of hit songs, Bryan welcomed fellow country superstar Carrie Underwood on stage to sing a cover of Randy Travis' "I Told You So," much to the surprise of the crowd. Underwood, proudly showing her support for the Nashville Predators by donning the team's T-shirt — the Preds are currently in the playoffs — showed off her signature power vocals on the Travis cut, with Bryan demonstrating his own impressive voice.

But that wasn't the only treat the crowd received that night, as the two stars also teamed up for an epic rendition of Bryan's "Play It Again," with Underwood singing it just as naturally, as if it were her own song.

The "Dirty Laundry" singer was just one of the special guests Bryan brought out for his two-night, sold-out stay at Bridgestone Arena. Little Big Town's Karen Fairchild joined him onstage during Friday's (May 5) concert for a duet on "Home Alone Tonight," in addition to LBT's hit "Girl Crush," which had Bryan showing off his falsetto. Cole Swindell also showed up on Saturday to sing Bryan's hit "Roller Coaster" and Florida Georgia Line's "This is How We Roll," both of which he co-wrote.

The Huntin,' Fishin' and Lovin' Every Day Tour keeps the "Move" singer on the road for most of 2017, crossing the U.S. with a variety of opening acts, including Brett Eldredge, Lauren Alaina and Granger Smith.

40 Reasons to Love Luke Bryan

See Luke Bryan's Most Amazing Moments!

More From Kalamazoo's Country