Final answer:
Flute and piccolo players produce sound by blowing air across a mouthpiece or embouchure hole. The length of the tube and the size and shape of the holes on the flute or piccolo can be adjusted to change the pitch of the sound produced.
Step-by-step explanation:
Flute and piccolo players produce sound by blowing air across a mouthpiece or embouchure hole. When the air passes across the hole, it creates vibrations, which then travel down the tube of the instrument, producing sound. The length of the tube and the size and shape of the holes on the flute or piccolo can be adjusted to change the pitch of the sound produced.