A mechanic who had worked in the factory of Alexandre in Paris emigrated to the United States and conceived the idea of a suction bellows, instead of the ordinary bellows that forced the air outward through the reeds. There was concurrent development of similar instruments. Alexandre Debain improved Grenié's instrument and gave it the name harmonium when he patented his version in 1840. He called it an orgue expressif (expressive organ), because his instrument was capable of greater expression, as wells as of producing a crescendo and diminuendo. A harmonium-like instrument was exhibited by Gabriel-Joseph Grenié (1756–1837) in 1810. The harmonium's design incorporates free reeds and derives from the earlier regal. Christian Gottlieb Kratzenstein (1723–1795), professor of physiology at Copenhagen, was credited with the first free-reed instrument made in the Western world, after winning the annual prize in 1780 from the Imperial Academy of St.
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