Lovevixen...thanks for your comments. I've just ordered a second hand set of 4 different mouthpieces. Anyhow, I don't really see a problem in being able to buzz from 3 different sources. Certainly producing 2 buzzs at the same time doesn't give a very good tone (it's horrible!). I didn't realize I was doing it until I tried buzzing without the mouthpiece. Now, being aware of that, I can buzz from the center, and also slightly aside from the center on both left and right sides just by twiching the lips slightly. It's like having a set of 3 mouths which can be switched on/off at will. Each with it's strenght and weaknesses. That can't be wrong! Anyhow, certain concerns aren't for me...why hiring someone? For what? I'm not really playing the trumpet to become an accomplished/professional trumpet player...it's more a sort of self discovery...as long as I'm interested and intrigued that's fine with me. Some play playstation, I got this cornet!