This is a new edition by Roger Delmotte. There are 36 advanced etudes for trumpet, cornet, or flugelhorn. Composed by Theo Charlier (1868 - 1944), these are advanced melodies and are very popular among the top schools of music's trumpet majors. The melodies are longer than most etude books and are a good test of your endurance. As with many technical studies, it is best to work on them in sections until you can play them comfortabily before proceeding to a new section.