Not really sure if its a cover of Danzig.
Johnny Cash recorded it in 1994 on the album
American Recordings, while Danzig recorded it in 1999 on
6:66 Satan's Child.
As weird as it is, I think technically it's Danzig who covered Johnny Cash, even though Danzig wrote it.
Danzig wrote it specifically for Johnny Cash to sing. I remember reading an interview with Danzig back then in which he joked that his dad finally considered him a "real" musician because Johnny Cash sang a song he wrote.
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