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1973 Daniel Szuser French rock 'n' roll (rock and roll) music documentary featuring Leonard Cohen (the famous composer/singer/poet, probably best known for his songs "Hallelujah" and "Suzanne"), Johnny Winter (the famous blues musician), Mungo Jerry, Pete Brown, and narrated by Cuetan Herce and Jacques Higelin. Apparently the poster was originally intended to be called "a cause du pop", because the French one-panel poster has that title printed on it, but a distributor glued a very large title change snipe over that area with the new title of "Guitare au poing".