But it will give a more velvet sound. A large backbore opens the tone and creates volume, but can reduce the speed of air, making high notes less resonant. Well, I hope this gave you some insight on the mouthpiece. And if you're looking for a mouthpiece, try and find one that is in balance. One of the fundamental principles of playing an instrument, especially the horn, is breathing.
Breathing is what makes the sound what gets notes to resonate and penetrate through an ensemble.
This is especially hard because of the shape of our instrument. And if you have 30 screaming trombones and trumpets sitting behind you or next to you, it makes getting your sound out even harder. First, you must realize that the way you breathe affects your sound. If you breath only down to your chest, then your sound will come out thin and very unclear. But a breath that goes down to your diaphragm, will give you a dark, wide, and resonate tone.