A four-disc boxed set covering Waylon Jennings' career, titled Nashville Rebel, will be released Sept. 26 on RLG Nashville/Legacy. The set includes a previously unreleased 1978 duet with Johnny Cash, "The Greatest Cowboy of Them All," as well as "It's Sure Been Fun" and "People in Dallas Got Hair," both previously unreleased in the U.S.. Jennings' widow Jessi Colter and son Shooter Jennings helped create the set that features liner notes by guitarist Lenny Kaye and historian Rich Kienzle.