In the late ’80s, the late Johnny Cash, a mythic figure in the annals of country music, was dropped from his contract at longtime home Columbia Records. From there, Cash went to Mercury, but that deal didn’t last long. For a little while in the ’90s, Johnny Cash was without a label. Then he signed to Rick Rubin’s American label and released the Rubin-produced 1994 album American Recordings, which kicked off a late-career renaissance and cemented Cash’s legend status. Just before he signed with Rubin, though, Cash recorded an album’s worth of demos that have never been released. That’s about to change.