François Louis adını verdiği firmanın yöneticisi ve tasarımcısı olmakla birlikte 30 yıldır bek bilezik ve kamış yapmaktadır. Bob Berg, Tim Ries, David Sanchez, Chris Potter, Gary Keller, Jason Seizer, Emanuele Cisi, Jorge Pardo ve daha bir çok sanatçıyla çalışan Francois tüm bek ve bilezikleri kendi tasarlamakta ve el işçiliği ile sonlandırmaktadır...

who is FL? : In 1980 he builds his first wooden mouthpiece. He designs the architecture of a new saxophone mouthpiece chamber (inner cavity) and registers his first patent. In 1985-86 he works on the conception of a metal tenor mouthpiece. In 1987 he creates mouldings of a short series of a solid silver tenor sax mouthpiece. He registers a new patent on saxophone mouthpieces. Bob Berg acquires a solid silver François Louis mouthpiece. In 2003 FL achieves the modelisation of the Aulochrome with the Designer-Engineer François Decorte. He also develops personal concepts for the design of a new reed for saxophones and clarinets.