The new track is expected to feature on the Oklahoma songsmith's upcoming album.
Luke Bryan, Miranda Lambert and Thomas Rhett will headline the inaugural Virginia event.
The new artists join the Maryland festival's impressive roster, which includes the likes of Trampled By Turtles and Sierra Ferrell.
The songwriting maestro will release the new project on June 2.
The West Virginia singer-songwriter is currently readying his Live from the Church EP.
Lainey played ‘Things A Man Oughta Know’ and more for the Opry crowd.
