A lionised figure in the French-speaking world, Johnny Hallyday was an unstoppable force for over five decades, credited with introducing his homeland to rock 'n' roll. He mastered the rebellious sound of the '60s, taking turns at up-tempo bops and twangy blues, but Hallyday's legend grew from his ability to adapt and evolve. The '70s brought ardent ballads and sprawling arrangements, while the '80s made use of new production tools like keyboard and synth. In recent decades, the prolific singer crafted masterful pop-rock—never neglecting his powerful, ardent and unmistakeable voice.