Does anyone know how to correct a double buzz, I've been dealing with it for over two weeks now, the worst part about this Is that I have marching band camp in three days! What happens is when I attempt to play an A sometimes a C# will come out. Or I'll get a double buzz anywhere between the concert F in the staff to concert Eb just on top the staff. Lastly I went through an embouchure change about 40 days ago because I was playing in the red and I had to learn to play with my lips in when playing because I have pretty robust chops and my teacher had to do an unexpected move. Is the double buzz part of the recovery period from the embouchure or does it mean that I'm doing something wrong ? And I don't have the money or time to find another teacher.