What you want to do, Is with the lips, Get it inside If you're playing the trumpet like this, That is the appature that we need when playing the trumpet. That's going to allow the air to go through It's going to allow us to have a free, relxed sound. Ummm, in fact, that's not how you should be playing the trumpet. However, if you're playing the trumpet like this, Nd you can see that I have my lips inside, te red part is inside The inner diameter of the cup. That is the appature that we need when playing the trumpet. That's going to allow the air to go through It's going to allow us to have a free, relxed sound.