Composed by Ferdinand Capelle, this Twenty great studies for Clarinet were written after Sivori, A, Charpentier, Rode, Fiorillo and M. Vieux. Quite difficult, they would help advanced players to master their technique and abilities and to build on the knowledge they already acquired.

Each study lasts between one and two pages and they all have the approximate same level of difficulty. The book features an index table with a reference to Sivori, A, Charpentier, Rode, Fiorillo and M. Vieux to use as a guide.