atrouble between 4th and 5th parital ok I will talk in concert pitch to avoid any confusion, and I will reffer to fingering like this T T T all valves open, _ _ _ all valves closed T _ T second valve closed etc... etc... So the question is; how to overcome the problems between 4th and 5th parital. Main problem is that those two paritals are overlapping, and I do not know where 4th stops and 5th begins for example everything is fine untill bD on 4th parital and D on 4th parital, I can play better D when I apply this fingering _ _ T rather than T T T, but am I still on 4th parital if I play _ _ T, because that fingering on 4th parital gives B According to that we cannot really tell where 4th parital stops and 5th parital begins. And it is important for me to know because that are the most difficult tones for me to get right (bD, D), beleive it or not I can play G on 6th parital with more ease than D on 4th parital. So it is not the problem with range at all but with understanding.