Master's thesis Henri Tomasi, André Jolivet, Eugene Bozza and their compositions for trumpet, are devoted to three important 20th century musicians. The work in the first chapter deals with the development of the french composition and trumpet school, at the beginning of this century. In addition, is about each of the three personalities in each chapter. There is always a CV with a focus on the contribution to the development of the trumpet repertoire and the analysis of one of the author's compositions.