the.com/embouchure
The face you make to convince brass and reeds to sing.
means The precise way a musician shapes lips, jaw, and tongue against a wind instrument's mouthpiece to produce sound.
from From French emboucher, to put to the mouth, rooted in bouche, mouth — itself from Latin bucca, cheek.
Also riversOriginally meant a river's mouth opening to sea.
Muscle memoryTakes years to build, weeks to lose.
Injury riskPlayers can suffer focal dystonia from overuse.