Thanks a million for all the insightful replies. You guys are teaching me a lot. And sorry again for the confusion, english is not my first language. I tend to agree with "mr. elephant" even though he sometimes sounds a little exasperated. Here's the deal: 1. The main reason behind my question is my ...

First thanks for the reply. What I really mean is to have some valve slides open in order to "short circuit" the pipe and create some new timbral/microtonal possibilities. The real issue for me is that I don't fully understand yet how 4th, 5th and 6ths valves work and how they may behave if removed ...

Dear friends from the board, I am a composer currently writing a brass quintet and I am really interested in working with removed valve slides. I am wandering if anybody over here could point me out to some resources (scores, dissertations, charts, etc) dealing specifically with this issue. The only ...