Barbara Pravi represented France at the Eurovision 2021, with this song, she wrote. She finished at the second place, that year. It's a very typical and classical french song. Slimane, reinterpreted it his own way, and gave his tone and flavour to it. He succeeded making this song sound like if it was his own.
You may also be interested in another Voila cover. Now more popular than the original by Barbara Pravi. Although not their genre, it makes even metalheads cry. ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-KdIhq1tb8Co.htmlfeature=shared
Slimane co-composed the last song of Lara Fabian « Ta Peine » (Your sorrow): ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-IssDFFl87OM.htmlsi=vj3-4BbnSloHCqN2