Manny, I've been around here for some time, just not posting. I'm currently studying music at collage. My teacher for 1 year has left Singapore and returned to the US. Today I had my 1st lesson with the new teacher. He said that I play too openly. I need to close my embouchure more in the lower register. But my previous teacher always taught me to be as relax as possible and play as open as possible. Help! Edric .