In a genre primarily driven by solo artists, CMT takes a look at the 20 greatest country bands of all time. Setting aside commercial impact in favor of true historical influence, CMT has compiled a comprehensive list dating back to classics like the Carter Family and Ernest Tubb & the Texas Troubadours as well as modern favorites such as Alabama and the Dixie Chicks. The one-hour documentary also features Emmylou Harris & the Hot Band, Bill Monroe & the Blue Grass Boys, Bob Wills & His Texas Playboys and the Flying Burrito Brothers among others.