Accordion Musical Instrument

The Accordion is a musical instrument from handheld bellows-driven free reed aerophone family. It is sometimes referred to as squeezeboxes.

The accordion is played by compression and expansion of a bellows, which generates air flow across reeds; a keyboard or buttons control which reeds receive air flow and therefore the tones produced.

Modern accordions consist of a body in two parts, each generally rectangular in shape, separated by a bellows. On each of these parts of the body is a keyboard containing buttons, levers or piano-style keys. When pressed, the buttons travel in a direction perpendicular to the motion of the bellows (towards the performer). Many of the modern accordions also have buttons capable of producing entire chords.

In 1822 in Berlin, Friedrich Buschmann invented many of the accordion's basic form.

In his 1833 "Schule für Accordion", the musician Adolph Müller described a great variety of instruments.

Further innovations of the accordion followed and continue to the present. Various keyboard systems have been developed, as well as voicings (the combination of multiple tones at different octaves), with mechanisms to switch between different voices during performance, and different methods of internal construction to improve tone, stability and durability.





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