Saw this too over at Rolling Stone on my way out the door to a friend’s B-day party. Johnny Cash and Keith Richards playing the song Big River. Two people who should be on some kind of musical Mount Rushmore. I loved Johnny Cash growing up. After he died they made that horrible movie and sort of mythologized him to where he lost some of the endless humanity that he had in his life. I had to step away for a moment while he was turned into a pale version of the complex and musically fearless person that he was in life. If you really want to learn about him read Cash by Johnny Cash. I think his autobiography will put his life in context better than any retrospective could. An indisputable cornerstone to all music that came after him.