The special collaboration has been released as an exclusive Spotify Single.
Molly Tuttle, The Wood Brothers, Brent Cobb, Mike & The Moonpies and more have all been confirmed for the Florida festival.
Wallen's 36-song album, One Thing At A Time, remains at No. 1 on the Billboard 200.
The Oklahoma songsmith is currently finishing up his new album, Writers and Fighters.
The husband-and-wife duo are heading across The Pond in August.
Wading into the first Highways festival, the Virginia born-star emerges triumphant.
