Although he was not the first to sing rock' n' roll in France, in 1960 he was the first to popularize rock' n' roll in France. After rock, he launched the twist and mashed potato, and although he was sometimes accused of giving in to musical fashions, he preceded them more often than not. The different musical currents to which he devoted himself, rock' n' roll, pop, rhythm and blues, soul, psychedelic rock, draw all their origins in the blues, and...