Jean-Philippe Léo Smet (French pronunciation: ?[??? filip leo sm?t]; 15 June 1943 – 5 December 2017. Johnny Hallyday was a French rock and roll and pop singer and actor. During a career spanning 57 years, he released 79 albums and sold more than 110 million records worldwide. He sang an estimated 1,154 songs and performed 540 duets with 187 artists.