On Friday (April 21), the Zac Brown Band will share another new song from their forthcoming new album, Welcome Home -- and they're getting a little help on this one. The track, "All the Best," features Kacey Musgraves.

An Instagram video posted by ZBB on Wednesday (April 19) shares a snippet of the band and Musgraves' collaboration on "All the Best," and shows Musgraves, Brown and the group's John Driskell Hopkins recording the track. In the post, the Zac Brown Band say they feel "so fortunate" to have Musgraves joining them on the song, which they call "an old favorite."

"I had SO much fun singin' on one of my favorite old @john_prine songs on the new @zacbrownband record," Musgraves adds in an Instagram post of her own. "Zac - thanks for always being so kind and supportive to me."

As Musgraves mentions, "All the Best" was written by Prine, and originally released on his The Missing Years album. That project, released in 1991, won a Grammys trophy for Best Contemporary Folk Album.

ZBB and Musgraves' version of "All the Best" is the final track (of 10) on Welcome Home. The album is due out on May 5.

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