Jean Baptiste Arban’s “La grande méthode complète de cornet à piston et de saxhorn”, or “The Cornet Method”, is the go-to book for not only cornettists but students of the whole brass family.
Written some time before 1859, it complemented an innovative approach to brass instrument playing developed with the introduction of the piston valve. Together with this method book these innovations helped to elevate technical musicianship of brass instrumentalists to an unprecedented level. Along with a few various other books it forms part of the essential core studies of today’s cornet or trumpet student.
Within it are a range of short studies designed to develop various elements of technique, progressing to fourteen longer etudes where they are combined. Finally, it contains a collection of air variation solos, including the famous ‘Carnival of Venice’.
You can download it legally for free, since this book is in the public domain. Here is the book in three different sections below.
This and many other useful scores can be found at: