What to read after Advanced Fun with Fundamentals?

Advanced Fun with Fundamentals is a supplementary technic book dealing with scales, technic studies, theory, rhythms, embellishments, transposition, and various other fundamentals of band playing encountered at the intermediate and more difficult levels. The primary purpose of this book is to further the development of the band student's technical fluency, counting accuracy, musical style and understanding through the use of practice material presented in a manner which should prove to be interesting, enjoyable, and of great help in achieving all-around musicianship.