Question: What top 40 hit was written by the noted "The Moonshiner" performer and was covered by many artists including Robert Plant and Johnny Cash?
Sentence (from "Wildwood Flower (album)"): It was released in 2003 on the Dualtone record label, four months after her death and only a few days before the death of Johnny Cash, who provides backing vocals, making this the final release of his lifetime.
Relevant evidence: No