okay .. if a trumpet gets it's sound from activating a standing wave and getting the horn to resonate and certain models horn are made the same .... then the two trumpets should actually sound the same ( same mp as well is used). In reality I sound basically the same on different horns. So how does this work? Is it when a player plays really relaxed and lets the horn do the work the trumpet will lose it's distinction between players? Is the inefficiency of the player what actually makes a horn sound unique to them? Is it the physical characteristics of a player that make each of us sound unique? Is the sound actually resonating in my lungs and causing an effect on the sound of the horn. As I practice being in tune with the trumpet and getting it to resonate I wonder if I am screwing with my tone. It really does nag me when I practice. So I do have a reason for putting this out to the group.