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August 1969: Full-length portrait of English singer Joe Cocker, wearing a tie-dyed shirt and blue jeans, performing at the Woodstock Music Festival in Bethel, New York. (Photo by Fotos International/Getty Images)

August 1969:  Full-length portrait of English singer Joe Cocker, wearing a tie-dyed shirt and blue jeans, performing at the Woodstock Music Festival in Bethel, New York.  (Photo by Fotos International/Getty Images)