Labels:bottle | door | fan | light | mouthpiece | sky OCR: MOUTHPIECE HE SOUND of the horn is produced by the vibrati onof the player s li ps when pre ssed against the rim of the mouthpiece The horn mouthpiece is slender and cone- shaped and fits into the upper end of the tube. Players choose mouthpiece that suits the shape of their lips, choosing a wider and deeper one if they play mostly lower parts, and na rrower and shallower one if they usually play first horn, which often requires high notes