Howard, You have a point here, but if the point is that there is not a difference in the difficulty of a sound on different wind instruments then you are wrong.
When I lost that best of instruments (due to age, cigareets, whuskey - and the wild, wild wimmen probably had nothing to do with it - but they were fun), lost the voice, I took to the penny whistle. (And there may be some on the lute list, and harp lists, that wish I'd stuck to it). No one can accuse the penny whistle of being complex - there is no "embouchere" to produce the sound, just blow. But yet there is a difference between instruments as to pitch shift. I have a collection of whistles, some cheap and some expensive. As I'm sure you know the whistle is basically a two octave instrument (can go more with skill) that changes octaves on the "overblow". I have whistles, of the same basic pitch, that have a subtle octave break, but need a contining addition of wind to continue in the upper octave - and I have others that need a real push to jump from C to D (most whistles are D scale based), but then nothing additional to go to the top of the upper D scale. The same must apply to trumpets and cornetti, and the horns. I've not played them, but have to feel that the overall construction and pitching of the horn may not define it's particular comfortable pitch level. I believe Daniel is correct, although in the whistle of my experience the breath control is the defining factor, while in the trumpet/horn group the embouchere comes in. Best. Jon To get on or off this list see list information at http://www.cs.dartmouth.edu/~wbc/lute-admin/index.html
