WOODWIND INSTRUMENTS ARE wind instruments that are generally made of wood, although some are made of metal or plastic. The sound of a woodwind instrument is produced by the vibration of air in hollow tube. The air is made to vibrate by blowing across a blow hole-as in the flute and piccolo or by blowing through a single reed as in the clarinet and saxophone or a double reed-as in the bassoon, cor anglais, and oboe. The pitch of a woodwind instrument can be changed by opening or closing holes cut into the tube of the instrument.
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