Tim McGraw recently teamed up with up and coming pop group the Shadowboxers for a suave cover of Leo Sayer's "More Than I Can Say."

During a recent stop on McGraw and wife Faith Hill's 2017 Soul2Soul Tour, the country superstar took some time backstage before the show to collaborate with the stellar ensemble. Using a bathroom as their stage, McGraw kicks the performance off with his smooth vocals singing the classic lyrics,  "I love you more than I can say / I'll love you twice as much tomorrow / Oh love you more than I can say."

The Shadowboxers' Adam Hoffman, Matt Lipkins, Scott Schwartz, Cole McSween and Carlos Enamorado add even more flair to the song as they strum along on their guitars, showing off their own impressive voices as they harmonize beautifully with McGraw on the chorus. The country star lets the five-member band do the honors as they wrap up the special performance with their trademark harmonies. "Love these guys!" McGraw writes alongside the video on Twitter.

The Shadowboxers caught the attention of pop superstar Justin Timberlake after posting a video of themselves singing his track "Pusher Love Girl" online, leading him to sign the group to his artist development company, Villa 40. They are just one of several acts hitting the road with the country music power couple as they cross the globe on the Soul2Soul Tour, which runs through October. Other stars slated to hit the road as opening acts include Brothers Osborne, Chris Lane, Midland, Jon Pardi, Brandy Clark and more.

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