Forgive me for what is probably a very simple question (as a newbie). I have a cornet, a flugel and . . . sorry to mention . . . a trumpet. (All of different antiquity). What is is about the instrument that influences my range? I can manage G above staff on flugel highest, can just torture a C (2 ledgers above) but can manage a F above that on the trumpet. Conversely I can manage 3 breathy pedal tones on the flugel but struggle with 2 on the cornet and non on the trumpet. Why should this be so? This is not another fruitless question about a newcomer extendign range. I have more notes already than I know what to do with ! But more to understand the physics of the things.