Scarlett's career is on fire as she sings "Free" in concert with Zac Brown, but the demands of fame are burning her out. Rayna asks Deacon to help write a much-needed hit for her new album, and it's like old times--perhaps too much. Concert venues are dropping from Juliette's tour and Jeff, her label head, is furious, and Zoey is bruised by Gunnar's inattention when he gets an invi