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Various German manufacturers tried to develop a single unified keyboard system for all German concertinas, but this was only partially accomplished by the end of the 19th century, when the Chemnitzer and Carlsfelder systems merged into the unified concertina system, and a unified bandoneon system was created.
A Chemnitzer concertina is a musical instrument of the hand-held bellows-driven free-reed category, sometimes called squeezeboxes.The Chemnitzer concertina is most closely related to the bandoneón (German spelling: Bandonion), and more distantly, to the other types of concertinas and accordions.
The Carlsfelder concertina (German: Carlsfelder konzertina) is a member of the German concertina family developed by Carl F. Zimmerman, ...
Carl Friedrich Uhlig (1789–1874) was a German luthier, known for inventing the German family of concertinas, from which are descended variants such as the Anglo concertina, bandoneón, Carlsfelder concertina, and Chemnitzer concertina.
Other single-action or bisonoric members of the free-reed family include the German concertina, the Anglo-German (or "Anglo") concertina, the bandoneon, the Chemnitzer concertina (see concertina) and the mouth organ . There are varieties of diatonic button accordion that are double-action, such as the garmon.
hayden system duet concertina. Hayden system, invented in 1963 and patented in 1986, is an isomorphic system in which all scales and intervals are arranged uniformly. [12] Years after its invention, it was discovered that a nearly identical layout had been patented by the Swiss designer Kaspar Wicki in 1896. [13]
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