In Porret s arrangement, which is adjustable to C or B? Trumpet, Cornet and Saxhorn, a handy transposition table is included. The Vingt-Quatre Vocalises enable the performer to focus on tone, lyricism, articulation, dynamic contrast, fingering and breath control, among other significant aspects. Being notably versatile, and having remained a popular aid to vocalists and instrumentalists for over two centuries, it is clear that Vingt-Quatre Vocalises, adapted for C or B? Trumpet, Cornet and Saxhorn, would be a crucial aid to a performer s progression.