This is an updated version of the Arban trumpet method, with Maurice Andre among the editors. It follows a different method, replacing some of the original exercises (which would have been in Arban Book 1) with new ones and leaving out a great many of the originals. I bought this book because my copy of Arban, in three parts,is falling apart. While I seemed like a good idea to have all three in one, it turned out to be a mistake. The book is heavy, and won't stay open on the stand, making practice quite difficult. The new approach, based on different keys and including a few short exercises in each key as well as tonguing exercises, is useful though. But I would recommend going for the original, in three (more manageable) parts).