As thrilled as we were to have him back, we were even more excited that he would be joined by his wife and creative partner Amanda Shires – not only as a member of the 400 Unit, but as a featured artist in her own right. Since then he’s become an award-winning star in the Americana world, releasing two more acclaimed records: 2015’s Something More Than Free and this year’s The Nashville Sound. When last we saw Jason Isbell and his intrepid band the 400 Unit, it was on the heels of the release of his beloved 2013 breakthrough Southeastern.