This problem is getting more and more frustrating... No matter how much I practice, I keep squealing in the upper part of my range. I just had my horn checked at the shop a few months ago, and just got my Meyer back after having it refinished. I'm using RJS3M's and my teacher says the reeds aren't the problem... Pretty sure its an embouchure/voicing issue and I'm totally perplexed. With experimentation, I've found that if I pitch my voice lower, I won't squeak going up to a high C, I also have found that if I roll my embouchure in a little, my tone seems to sound better and the squealing and chirping subsides, but it HURTS ALOT. I suppose it probably hurts because I've been practicing a lot lately. Over the past few weeks, I've been doing 4 hours a day outside of rehearsals and classes and since this week is spring break, I've bumped it up to 6-8 hours of practice a day. Any suggestions? help!