Most players, especially brass players, find it hard to play very high notes without any preparation. Try to avoid having anyone come it in extreme ranges. This also applies to the lowest range in most instruments. If you want to have very, very high trumpets after they have been silent for some time, at least give them a few quiet lower notes so they can prepare. The higher it gets, the harder the embouchure is for brass players because of less space between the harmonics. For very skilled players, very high notes out of nowhere usually are not a big problem, but it always adds a bit of insecurity. Besides, is it plain rude to stress people like that. Usually you can find some way to circumvent high notes out of nowhere.

Tags: high notes, live, players