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| | Aerophone |
 | | An aerophone is any musical instrument which produces sound primarily by causing a body of air to vibrate, without the use of strings or membranes, and without the vibration of the instrument itself adding considerably to the sound. |
 | | It is one of the four main classes (class 4) of instruments in the original Hornbostel-Sachs scheme of musical instrument classification, the other three being idiophone, membranophone and chordophone (a fifth class, electrophone, was added in a later revision). |
 | | This class includes free reed instruments, such as the harmonica, but also many instruments unlikely to be called wind instruments at all by most people, such as sirens and whips. |
| www.ebroadcast.com.au /lookup/encyclopedia/ae/Aerophone.html (189 words) |
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