Here's the thing. I play with my the outside of my lips dry - I like the fact that the outsides of my embouchure are held firmly by the mouthpiece whilst inside the mouthpice all the mouvement takes place. However, when we get nights (like in our concert last Tuesday) when it is so hot that you are sweating everywhere I find it much more difficult to play as my mouthpice just slides around everywhere. I couldn't play with my lips wet. I do see players who have to wet thier lips before playing - I'm not sure how this helps?? Comments????