Johnny CashThe legendary Johnny Cash would have been 78 on Friday (Feb. 26), which is also the day his final studio album, 'American IV: Ain't No Grave,' arrives in stores. His record company is asking fans to celebrate by wearing black.

On Friday, fans are being invited to honor the Man in Black by posting pictures of themselves wearing his trademark color, for which he became known to in the early 1970s. In 1971, Johnny wrote the song 'Man in Black' to help explain his dress code: "I wear the black for the poor and the beaten down, livin' in the hopeless, hungry side of town, I wear it for the prisoner who has long paid for his crime, but is there because he's a victim of the times."

More information on fan photo submission can be found at losthighwayrecords.com.

Listen below to 'Ain't No Grave,' the first single from 'American VI: Ain't No Grave,' which is the sixth and final installment of Johnny's American Recordings series produced by Rick Rubin. (Pre-order the album here.)

Johnny Cash - 'Ain't No Grave'

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