My private instructor is having me change my embouchure. It started after I had a lesson which I had not played 5 days prior to (due to illness), and I couldn't buzz anything on the mouthpiece. I adjusted the angle of the mouthpiece how he told me to, and I was suddenly able to get a little buzz out. Keep in mind that before being sick I could always buzz on the mouthpiece before playing. So I have to work on this new embouchure, and all I can really work on right now are the exercises he assigned to me, as well as breathing exercises when resting the muscles that form the embouchure. My airstream when I play is, and always has been, on a downward angle, but I've always played on an upward angle, which I belive I became used to from marching band my Freshman year. I had most of the mouthpiece below the lower lip, and very little above the top. I always applied a ton of pressure to play high, and my tone has been okay. Every note I played was sharp. With the new embouchure, I feel that I have the potential to become a MUCH greater player. My intonation is incredibly greater. I've gone from probably about 20 cents sharp to almost completely in tune on almost every note I can hit. I have some general questions though about the embouchure change, how my progress might seem to be coming along, and other such things. I started the change coming up on 8 days. My range was, on a good day, up to an E above the staff, but it was a very thin, un-good sounding note. So it is probably safest to say my best sounding consistant note was a C above the staff. Now, with the new embouchure, my comfortable range is only up to a top space E, but I feel that the F is coming along soon. If I were to play note by note, slowly ascending on a Bb concert scale, I can sometimes get up to an A above the staff (oday was my first time hitting it), but it feels a bit uncomfortable. Would the reason for this be just simply that my muscles are adjusting and are not used to this new embouchure formation? Also, I may or may not have mentioned this, but my mouthpiece position on my face is now mostly upper lip, a little on the lower lip, and quite centered. General questions: When I'm having some trouble with notes, what is/are the reason(s) for this happening? How long, generally, would it take for me to be able to get back to play up to my previous range (up to a C above the staff). (When I say this, I mean actually being able to get up there in music, not just exercises.) Are the signs I have described good signs of how I am progressing? I know it's pretty vague, and not easy to judge over an online description. There are a couple things that are also worth mentioning. During the exercises, I seem to be getting fatigued somewhat quickly. I don't feel fatigued, but I see the red mark of the mouthpiece above and below my lips, and my sounds gets really flat. Is this just something that is typical when beginning an embouchure change? I know this is a LOT to read, but I really appreciate it if you took the time to read and answer. I know it is best to have my instructor evalate me, but I won't be having a lesson for another week, and he couldn't get a lesson in for me this week, so I just wanted some sort of feedback on how I am doing. Answers are much appreciated! Thank you!