What is (a) The mouthpiece of a wind instrument. (b) The shaping of the lips to the mouthpiece; as, a flute player has a good embouchure called?

embouchure — (Mus.) (a) The mouthpiece of a wind instrument. (b) The shaping of the lips to the mouthpiece; as, a flute player has a good embouchure. (Webster's 1913.)

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