Ok, so this is my third year playing saxophone. I had a real passion for it since I started and practiced alot and soon I became the best sax player in the band. I played well and I had a great tone. Recently, I was first chair but then I lost it to the boy in second chair because of my tone. I don't know what happened! Before I had a mellow tone but now it's kind of airy/brassy and I can't keep my air going for longer than about four measures even though before it was about 8-10. I changed sax and that's when this started happening... I have tried many ways to fix it but it continues to sound this way and I don't know what to do anymore. Please help! Also I don't know if I'm squeezing too hard or something but my teeth have begun to become crooked!! How can I stop this from happening?