Desc: CMT: The Greatest - 40 Days That Shaped Country Music: With Garth Brooks, Johnny Cash, The Chicks, Sara Evans. This two-hour special features the most memorable days that shaped today's country music -- with big breaks, breakups, hookups and more. Tim and Faith, Naomi and Wynonna, Kenny and Dolly, plus Shania, Reba, George and Kenny are all thrown in, making CMT 40 Days That Shaped Country Music the perfect place to learn about the events that shaped today's country music.