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Pump organ

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A pump organ, also known as a reed organ, is a musical instrument that uses free reeds to create sound.

Footpropelled organ
Footpropelled organ

Inside the instrument, air passes over thin metal strips called free reeds. These reeds are mounted in a frame and vibrate as air moves past them. This mechanism allows the instrument to produce musical tones. Unlike massive pipe organs, pump organs are much more portable. This portability made them very important for small churches and private homes. They provide a way to bring music into spaces where a large pipe organ would not fit.

To play the instrument, a person must move air through the system.

Reykholt 09
Reykholt 09

This is done using bellows, which are flexible containers that hold or move air. Some models use a pressure-based system where air is pushed out. Other models use a suction reed system that employs a vacuum to pull air in.

Harmonium 20151009 (23914086965)
Harmonium 20151009 (23914086965)

A player uses keys to control which reeds receive air. Most organs feature one manual, which is a single row of keys. Some higher-end models offer two manuals for more variety. Very large versions might even include pedalboards for the feet.

Memmingen Unser Frauen Steinmeyer-Harmonium 2
Memmingen Unser Frauen Steinmeyer-Harmonium 2

There are several distinct types of these instruments. The harmonium is a common name for a free-reed organ. One specific type is the Indian harmonium, which is a small, portable, hand-pumped version.

Another type is the melodeon, a name often used in Victorian-era America. In Japan, the foot-pumped version is called an ashibumi organ. These instruments vary greatly in size and complexity. Some are simple models with few stops, while others are housed in fine, ornate cabinets.

Beatty's Parlor Organ ad 1882
Beatty's Parlor Organ ad 1882

The history of the free reed began in the 18th century. A mouth organ called a sheng was brought to Russia during the first half of that century. Christian Gottlieb Kratzenstein, a professor in Copenhagen, is credited with creating the first Western free-reed instrument. He won a prize from the Imperial Academy of St. Petersburg in 1780. Later, Abbé Georg Joseph Vogler built the first free-reed organ based on Kratzenstein's ideas. In 1810, Gabriel-Joseph Grenié exhibited the orgue expressif, or expressive organ. Alexandre Debain improved this design and patented the name "harmonium" in 1840.

During the 19th century, the production of these instruments grew rapidly. Between 1850 and 1920, several million reed organs and melodeons were made in the United States and Canada.

4ft+8ftReeds
4ft+8ftReeds

Major manufacturers included the Estey Organ Company, the Cable Piano Company, and Mason & Hamlin. In the United States, a shift occurred after 1885 when the suction bellows became a standard technique. This change was adopted by the Mason & Hamlin firm in Boston. These instruments were also vital for global trade. Because they were more resilient than pianos, they were exported to colonies. They maintained their tuning in heat and humidity, and some were even treated with chemicals to resist tropical pests.

The instrument played a major role in music education across Asia. In Japan, the reed organ was introduced by Christian missionaries during the Meiji period.

1887-Japanese-women-Western-Bustled-fashions
1887-Japanese-women-Western-Bustled-fashions

Torakusu Yamaha, the founder of Yamaha, began making them after repairing an American model. This helped make Hamamatsu a center for musical instrument production. In China, the organ was introduced around 1897 through missionary activities.

Chinese Teacher Reed Organ
Chinese Teacher Reed Organ

It became a common tool for mass music education in schools. In the People's Republic of China, factories like the Danfeng Organ Factory produced them for widespread use.

Today, the pump organ holds different meanings in different cultures. In the West, the invention of the electronic organ in the 1930s led to a decline in harmonium use. The Hammond organ became a popular successor because it was compact and versatile. However, the Indian harmonium remains a central part of life in South Asia.

KDBhaktiFestWest 20150913 (22155426016)
KDBhaktiFestWest 20150913 (22155426016)

It is used by Sikhs, Hindus, and Muslims for devotional music like qawwali, ghazal, kirtan, and bhajan. It has also found a place in Western yoga subcultures. While many old Western organs are now kept by enthusiasts, the reed organ continues to provide a vital voice for many communities.

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🖼️ Images & Media (13)
File:Lisa Alvarado Kongsberg Jazzfestival 2019 (194515).jpg
Lisa Alvarado Kongsberg Jazzfestival 2019...
File:Beatty's Parlor Organ ad 1882.jpg
Beatty's Parlor Organ ad 1882.jpg
File:Harmonium 20151009 (23914086965).jpg
Harmonium 20151009 (23914086965).jpg
File:1887-Japanese-women-Western-Bustled-fashions.jpg
1887-Japanese-women-Western-Bustled-fashions.jpg
File:Chinese Teacher Reed Organ.jpg
Chinese Teacher Reed Organ.jpg
File:4ft+8ftReeds.JPG
4ft+8ftReeds.JPG
File:Sunday School Organ in Barratt's Chapel Museum, Frederica, Delaware.jpg
Sunday School Organ in Barratt's Chapel...
File:Reykholt 09.jpg
Reykholt 09.jpg
File:Memmingen Unser Frauen Steinmeyer-Harmonium 2.jpg
Memmingen Unser Frauen Steinmeyer-Harmonium 2.jpg
File:The church of St Mary in East Walton - harmonium - geograph.org.uk - 1745270.jpg
The church of St Mary in East Walton -...
File:Footpropelled organ.jpg
Footpropelled organ.jpg
File:Mariana Sadovska - Borderland (1384).jpg
Mariana Sadovska - Borderland (1384).jpg

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