I'm doing my dissertation on the aspects needed to build and improve Range and Endurance on the trumpet. I'm looking at different methods and teachings as well as planning on making a questionnaire to send to some pro's also. The books I have atm include: ITG journals from October 2012 The Physical Trumpet Pyramid - Eddie Lewis Arban Tutor How Brass Players Do It - John Ridgeon A few others that I can't think of right now. Anyone have any more recommended reading materials or suggestions on how to go about this? There is a lot of teachings that I personally wouldn't agree with but would like as much as possible so I could compare everything against each other! Thanks!