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William is a composer, producer, author, and performer. His first album “Ton Homme en passant” was released in 2009. His career began with a guitar in hand, as a musician and singer for many groups across his native Normandy. At the beginning of 2000, he signed his first contract as a songwriter with Warner Chappell, he was quickly noticed for his talents as a composer and arranger. Since then, he has written or composed and produced songs for Céline Dion, Nolwenn Leroy, Florent Pagny, Roch Voisine, Chimène Badi, Faudel, Christophe Willem, Marie-Amélie Seigner, Anggun, Ayanga... He co-produced "Elle et Lui" By Alain Chamfort.
In 2005 he offered the music for what would become the final of the musical "Le ROI SOLEIL", the beginning of a beautiful story with the " musical "which will continue with the composition and the co-product of a large part of the songs of "Mozart L'Opéra Rock", on tour in France, Europe, Russia, Japan, China, for which he will receive an "NRJ Music Award" for the song of the year. He co-composed and produced the songs for the show "1789, Les Amants de la Bastille", The direction and musical production with Jean-Pierre Pilot of "Mistinguett, Reine des années folles" and co-composed the entire songs. Also composed and produced the songs for the rock opera "Le rouge et le noir" which is currently on tour in China.