Jason Isbell and the 400 Unit is an Americana / Southern rock band originating largely from the Muscle Shoals area of Alabama, and led by former Drive-by Truckers singer / guitarist Jason Isbell. The band consists of Isbell (vocals, guitar); Sadler Vaden (guitar); Jimbo Hart (bass); Derry DeBorja (keys, accordion); Chad Gamble (drums). Fiddle player and singer Amanda Shires features regularly as a session player and occasional touring member. The Read more on Last.fm