Jason Isbell and the 400 Unit (Derry deBorja, Chad Gamble, Jimbo Hart, Amanda Shires and Sadler Vaden) stopped by Jimmy Kimmel Live last night (Sept. 19) to perform âCumberland Gap,â a new tune featured on Jasonâs 2017 album, The Nashville Sound. Penned by Jason, âCumberland Gapâ finds the Alabama native returning to his rockinâ roots.âŠâŠ MORE
