The lip configuration used to play any wind instrument is referred to as something that phonetically may sound like Am - b - sure. How is it spelled?
My interest is to study proper am-b-sure positions or conditions for playing clarinet.
The correct spelling of this word is embouchure. The reason it is spelled that way is because it comes from the French word for "mouth," which is "bouche."
The word, as you say, refers to the way that you use your facial muscles (mostly your lips) to fit with the mouthpiece of a brass instrument or a wind instrument.
When a player forms the correct embouchure, he or she is more likely to be able to play the instrument clearly through its full range. However, not all players of the same instrument form their embouchures the same way. This is especially true of players in different genres such as jazz and classical music.
You mean embouchure? My flute teacher's always saying something about my embouchure... like it's not strong enough or something...