Chord organ is a kind of home organ that has a single short keyboard and a set of chord buttons, enabling the musician to play a melody or lead with one hand and accompanying chords with the other, like the accordion with a set of chord buttons which was originated from a patent by Cyrill Demian in 1829, etc.[1][2] (See Accordion#History [note 1])
Initially, the chord organ was invented as a kind of electronic home organ by Laurens Hammond in 1950.[3][4][5] This was followed by the reed chord organ (c. 1959) and Optigan (c. 1971). The sound of the reed chord organ is somewhat similar to the harmonium or the accordion.
- ^ "Demian's Accordion Patent". 2004-10-20 ~ 2009-01-19 version. (translated by Karl and Martin Weyde from archaic German). The Classical Free-Reed, Inc. Archived from the original on 19 June 2009.
{{cite web}}: CS1 maint: others (link) Or,
"Das erste Akkordeon: Cyrill Demian und sein Accordion-Patent". Akkordeon-Online.de (in German). Archived from the original on 2018-06-24. Retrieved 2017-04-25.
— A summary and pictures of Demian's patent in 1829. - ^
Dyremose, Jeanette & Lars (2003). Det levende bælgspil : det kunstneriske harmonikaspils forudsætning (in Danish). Dyremose.com. p. 133. ISBN 87-988128-1-5.
automatically coupled chords on the bass side
- ^
"Laurens Hammond". Encyclopædia Britannica Online. 2014.
His later inventions included ... the chord organ (1950), on which chords are produced simply by touching a panel button.
- ^ US application 2645968, John M. Hanert, "Electrical musical instrument", published 1953-07-21, assigned to Hammond Instrument Company (filed 1950-06-23)
- ^ US application 2845831, Laurens Hammond, "Keyboard and switching mechanism for electrical musical instruments", published 1958-08-05, assigned to Hammond Organ Company (filed 1953-02-05, priority date:1950-06-23). "This application is a division of my copending application Serial No. 169,902, filed June 23, 1950, which was abandoned after this application was filed."
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