Free reed aerophone
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A free reed aerophone is a musical instrument that produces sound as air flows past a vibrating reed in a frame. Air pressure is typically generated by breath or with a bellows. In the Hornbostel–Sach
The reeds of an early 20th-century button accordion, with closeup
Sheng with 17 pipes; height is 55 cm (22 inches)
Free reed from a melodion, 1867
Harmoneon
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The Harmoneon or concert accordion is a French free reed aerophone, invented by Pierre Monichon in 1948, although he only patented the instrument four years later in 1952. It has been taught in musica
A Harmoneon by the Italian manufacturer Cavagnolo, manufactured in 1985.
Pierre Monichon in 2004.