Tim McGraw played his first first solo Nashville concert in six years on Saturday night (Aug. 15), but he wasn't solo for the entire show. The country star invited numerous special guests to share the stage with him throughout the night, including his wife, Faith Hill, with whom he performed "It's Your Love."

Written by Stephony Smith, "It's Your Love" was released in May of 1997, as McGraw's first single from his Everywhere album. The duet earned both the No. 1 spot on Billboard's Hot Country Songs chart and a Top 10 spot on the Hot 100 (No. 7); it also earned two Grammy Awards nominations, a CMA Award and four ACM Awards.

Press play on the video above to watch McGraw and Hill's duet at Music City's Bridgestone Arena. McGraw begins the tune solo, but his wife quickly surprises the crowd: In the song's first chorus, Hill begins harmonizing from backstage, then appears onstage to a bevy of cheers and applause from the audience. At the end of the performance, McGraw lets his wife enjoy the spotlight alone for a few moments, then steals a kiss before Hill leaves the stage.

Hill was not McGraw's only special guest on Saturday evening: Opening acts Chase Bryant and Billy Currington helped out on "Felt Good on My Lips" and "I Like It, I Love It," respectively, while Catherine Dunn, McGraw's cousin, sang her part on "Diamond Rings and Old Barstools," and Chris Janson and McGraw performed Janson's "Buy Me a Boat" together.

McGraw and Hill's oldest daughter, Gracie, also shared the stage with her dad. The two performed a brand-new song called "Here Tonight," which McGraw hinted would be featured on his upcoming new album as a duet. It is unclear, however, if the recorded version of the duet will feature the 18-year-old or another artist.

McGraw's 2015 Shotgun Rider Tour, featuring Bryant and Currington as opening acts, continues with shows this week in Florida.

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