After many years in the conservatory and a dozen to alternate between teaching and the stage, the gap between theory and practice has proved to be enormous. Two worlds that do not communicate with each other and boast an authenticity when only the purpose matters: to express itself via its instrument. Acquiring the technique and the experience but also the musical culture (and others ...) that will accompany us all our lives is an important issue. The work of the repertoire, the technique, the writing, the preparation for an examination or a concert, the history of his instrument ... These are all topics discussed during the course.