Johnny Cash is a legend in country music and now there is going to be a new CMT original documentary about the "Man in Black" called "Johnny Cash: American Rebel" that will air on CMT on Sept. 12 at 9 pm (which also is the anniversary of his death).

It will have interviews with Cash's family, friends, including Eric Church, Sheryl Crow, Kid Rock, Merle Haggard, Clive Davis and more. What makes this documentary unique is that this is the first time we will see Cash's children: John Carter Cash and Rosanne Cash as well as June Carter's daughter Carlene Carter all appear in a film about him.

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