Marcel Mule (1901-2001) is one of the greatest French saxophonists, renowned worldwide for his work on the classical Saxophone repertoire. He was teaching his students how to obtain a good quality of sound and believed it was dependent on the embouchure,the emission, the mastery of vibrato and thus of breathing. He wrote different methods that focus on technique, articulation and tone productions such as 'Eighteen exercises or etudes', 'Daily exercises after Terschack' or '30 Great exercises and studiesafter Soussmann' (in two books), among others."