In a previous post, I addressed the practice of “Clocking” your mouthpiece (“Clocking” Your Mouthpiece Part #2 – Trumpet Blog (thetrumpetblog.com). At the end of my post, I admitted to the possibility that rotating one’s mouthpiece can and did change the sound as well as a resistance factor. In the same article I admitted that I was originally skeptical of this technique but after trying it myself, I was convinced that the rotation made a difference in the final outcome. I also admitted that I had no idea why this happened. I recently had the pleasure of visiting with someone…