Have you ever heard or read something that does not make any sense to you at all and then you set out to prove it wrong only to find that it is actually true? This happened to me this past week and even though it is an embarrassment, I will swallow my pride for the betterment of the brass world. This past week I read a post on one of the brass bulletin boards which stated that this person claimed that the rotation of the mouthpiece could actually change how the instrument responded when played. Just the thought of someone…