Jason Isbell is an alt-country singer /songwriter /guitarist from Muscle Shoals, Alabama. Best known for his years with the Drive-By Truckers where he played with his then wife, bassist Shonna Tucker. Isbell - who joined the Truckers in 2001 - left the band in early 2007 around the same time as his divorce from Tucker was finalized. In addition to being a gifted songwriter, Isbell is regarded as an exceptional guitar player. His style is mostly in the alt-country genre, but is also infused with rock and blues elements. One of his most well-known songs is "Dress Blues," a tribute to a fallen soldier from the Iraq war. Jason Isbell's debut solo album Sirens from the Ditch was released on July 10th, 2007, on New West Records. With his band The 400 Unit, he toured in support of this release in the US and Canada during the summer and fall of 2007. Both Isbell and the band released a follow-up album, Jason Isbell and The 400 Unit on February 17, 2009.