Kid Rock is hosting a weeklong tribute to Johnny Cash on CMT. September 12th is the 12th anniversary of his death. The Cash-specific programming will begin next Tuesday with the biopic “Walk The Line,” featuring Joaquin Phoenix and Reese Witherspoon. On Thursday, Cash’s music will be represented in a “Throwback Thursday” video block, followed by the “CMT All-Time Top 40: Artist’s Choice” on Friday. The celebration will culminate on Saturday with a Cash-dedicated CMT Hot 20 Countdown and that night, the premiere of “Johnny Cash: American Rebel.” The new documentary is filled with original interviews with Cash’s friends, family, peers and the generations of artists he helped inspire.