Woodwind instruments are so named because they?

Woodwind instruments are so named because they produce sound by the vibration of a reed or reeds against a mouthpiece. The reed is usually made of wood, although some modern instruments use synthetic materials. When the player blows air into the mouthpiece, the reed vibrates and produces sound. The pitch of the sound is controlled by the length of the reed and the size of the mouthpiece. Woodwind instruments include the flute, clarinet, oboe, and saxophone.