I've heard that even the best wind players take a short break after a half hour. I always do. And, yes, too much moisture can ruin you tone. I have Music Medic swabs for both horn and neck and use them every half hour if needed.Does it make me sound flat? Because when i played before my sax got full of spit, the tone sounded nice and an hour after playing, i noticed that i had alot of saliva in the sax, i started to sound out of tune and ugly. thanks!