All accordions and concertinas have three main components: the reeds, bellows, and buttons or keys. Pushing or pulling the bellows slower or faster makes the sound softer or louder, respectively. The accordion has free reeds on both the treble and bass sides. In modern accordions, the free reeds are generally made of tempered steel. The press of a button or key opens a valve to allow air to pass through the reed or reeds to make a sound when the bellows are pumped in or out. In the diatonic button accordion, reeds are fixed in pairs so that one note sounds when air moves in, and a different one when air moves out. The button accordion has melodic notes on one side of the bellows (usually the right side), and bass accompaniment notes on the other side (generally the left).
Some button accordions have 'stops', which change the tone and are called things like "Organ" or "Trumpet" or "Tremolo". These allow the instrument to produce different tones for a variety of situations. Some popular examples are the three-stop accordion, with two sets of tenor reeds and one bass set, and the classic German four-stop. The three-stop accordion has two sets of tenor and one set of bass reeds. The German four-stop is preferred by Cajun musicians and has one bass, one piccolo, and two tenor stops. This gives the instrument a denser sound. Most diatonic instruments lack switches, though there are some made by companies such as Hohner, as well as the one-row 'Cajun'-type boxes which have usually 3 or 4 stops on top of the box as switches (making it even more akin to a pipe organ), but it is generally more common to find switches on a chromatic or piano accordion.
One popular type of diatonic button accordion is the standard, one-row button accordion. This is tuned to a diatonic, 2.5 octave scale. The accompaniment side (bass/chordal side) buttons play a tonic chord when pushed, and dominant chord when pulled. This works well and is popular in basic Anglo-American fiddle tunes. The German melodeon was a popular, later version of a diatonic button accordion, especially in Scotland until around the 1920s.
The first diatonic button accordion was patented under the name 'Accordion' in 1829 by Cyril Demian. The same year, Charles Wheatstone made the first concertina. The first chromatic button accordion was made by Franz Walther in 1850. The name 'Accordion' is thought to originate from Akkord, the German word for chord. The accordion may have originated with traditional reed instruments from southeast Asia. The button accordion was first mass-produced in Europe in 1835, with the piano accordion coming later. It was the first mass-produced, loud, durable, portable instrument – though it was not cheap. At first, the button accordion was too expensive to be very common among the lower and middle classes, but as it lost its novelty (around the 1860s), it became more widespread among these groups, too. Surviving early instruments show that at first they only played chords, and were to be played left-handed, unlike now. The first accordions only had 5 buttons (10 chords), so they were mostly used for accompaniment.
The diatonic 2-row button accordion with eight bass buttons is still very common in northeast Brazil. It is known as the fole to distinguish it from the piano accordion. It first appeared there in the late nineteenth century. Previously, one-row diatonic button accordions with two bass buttons were used. Later, chromatic accordions grew in popularity, increasing the possible styles that could be played on them.
Ní Chaoimh, Máire (2010). "Journey into tradition : a social history of the Irish button accordion". {{cite journal}}: Cite journal requires |journal= (help) https://ulir.ul.ie/handle/10344/1616
Ní Chaoimh, Máire (2010). "Journey into tradition : a social history of the Irish button accordion". {{cite journal}}: Cite journal requires |journal= (help) https://ulir.ul.ie/handle/10344/1616
Snyder, Jared (1994). "Leadbelly and His Windjammer: Examining the African American Button Accordion Tradition". American Music. 12 (2): 148–166. doi:10.2307/3052520. ISSN 0734-4392. JSTOR 3052520. /wiki/Doi_(identifier)
Ní Chaoimh, Máire (2010). "Journey into tradition : a social history of the Irish button accordion". {{cite journal}}: Cite journal requires |journal= (help) https://ulir.ul.ie/handle/10344/1616
Harrington, Helmi Strahl; Kubik, Gerhard (20 January 2001). "Accordion". Grove Music Online. doi:10.1093/gmo/9781561592630.article.46180. ISBN 9781561592630 – via Oxford Music Online. 9781561592630
Harrington, Helmi Strahl; Kubik, Gerhard (20 January 2001). "Accordion". Grove Music Online. doi:10.1093/gmo/9781561592630.article.46180. ISBN 9781561592630 – via Oxford Music Online. 9781561592630
Ní Chaoimh, Máire (2010). "Journey into tradition : a social history of the Irish button accordion". {{cite journal}}: Cite journal requires |journal= (help) https://ulir.ul.ie/handle/10344/1616
Snyder, Jared (1994). "Leadbelly and His Windjammer: Examining the African American Button Accordion Tradition". American Music. 12 (2): 148–166. doi:10.2307/3052520. ISSN 0734-4392. JSTOR 3052520. /wiki/Doi_(identifier)
Eydmann, Stuart (1999). "As Common as Blackberries: The First Hundred Years of the Accordion in Scotland, 1830–1930". Folk Music Journal. 7 (5): 595–608. ISSN 0531-9684. JSTOR 4522630. /wiki/ISSN_(identifier)
Harrington, Helmi Strahl; Kubik, Gerhard (20 January 2001). "Accordion". Grove Music Online. doi:10.1093/gmo/9781561592630.article.46180. ISBN 9781561592630 – via Oxford Music Online. 9781561592630
Eydmann, Stuart (1999). "As Common as Blackberries: The First Hundred Years of the Accordion in Scotland, 1830–1930". Folk Music Journal. 7 (5): 595–608. ISSN 0531-9684. JSTOR 4522630. /wiki/ISSN_(identifier)
Snyder, Jared (1994). "Leadbelly and His Windjammer: Examining the African American Button Accordion Tradition". American Music. 12 (2): 148–166. doi:10.2307/3052520. ISSN 0734-4392. JSTOR 3052520. /wiki/Doi_(identifier)
Snyder, Jared (1994). "Leadbelly and His Windjammer: Examining the African American Button Accordion Tradition". American Music. 12 (2): 148–166. doi:10.2307/3052520. ISSN 0734-4392. JSTOR 3052520. /wiki/Doi_(identifier)
Snyder, Jared (1994). "Leadbelly and His Windjammer: Examining the African American Button Accordion Tradition". American Music. 12 (2): 148–166. doi:10.2307/3052520. ISSN 0734-4392. JSTOR 3052520. /wiki/Doi_(identifier)
Snyder, Jared (1994). "Leadbelly and His Windjammer: Examining the African American Button Accordion Tradition". American Music. 12 (2): 148–166. doi:10.2307/3052520. ISSN 0734-4392. JSTOR 3052520. /wiki/Doi_(identifier)
"Squeezebox stories". The Arhoolie Foundation. http://squeezeboxstories.com/
Snyder, Jared (1994). "Leadbelly and His Windjammer: Examining the African American Button Accordion Tradition". American Music. 12 (2): 148–166. doi:10.2307/3052520. ISSN 0734-4392. JSTOR 3052520. /wiki/Doi_(identifier)
Snyder, Jared (1994). "Leadbelly and His Windjammer: Examining the African American Button Accordion Tradition". American Music. 12 (2): 148–166. doi:10.2307/3052520. ISSN 0734-4392. JSTOR 3052520. /wiki/Doi_(identifier)
Blogs, AMIS (13 September 2019). "The Bisonoric Button Accordion in Northeast Brazil". AMIS. Retrieved 26 May 2020. https://www.amis.org/post/the-bisonoric-button-accordion-in-northeast-brazil
Harrington, Helmi Strahl; Kubik, Gerhard (20 January 2001). "Accordion". Grove Music Online. doi:10.1093/gmo/9781561592630.article.46180. ISBN 9781561592630 – via Oxford Music Online. 9781561592630
Snyder, Jared (1994). "Leadbelly and His Windjammer: Examining the African American Button Accordion Tradition". American Music. 12 (2): 148–166. doi:10.2307/3052520. ISSN 0734-4392. JSTOR 3052520. /wiki/Doi_(identifier)
Eydmann, Stuart (1999). "As Common as Blackberries: The First Hundred Years of the Accordion in Scotland, 1830–1930". Folk Music Journal. 7 (5): 595–608. ISSN 0531-9684. JSTOR 4522630. /wiki/ISSN_(identifier)
Harrington, Helmi Strahl; Kubik, Gerhard (20 January 2001). "Accordion". Grove Music Online. doi:10.1093/gmo/9781561592630.article.46180. ISBN 9781561592630 – via Oxford Music Online. 9781561592630
Harrington, Helmi Strahl; Kubik, Gerhard (20 January 2001). "Accordion". Grove Music Online. doi:10.1093/gmo/9781561592630.article.46180. ISBN 9781561592630 – via Oxford Music Online. 9781561592630
Snyder, Jared (1994). "Leadbelly and His Windjammer: Examining the African American Button Accordion Tradition". American Music. 12 (2): 148–166. doi:10.2307/3052520. ISSN 0734-4392. JSTOR 3052520. /wiki/Doi_(identifier)
Ní Chaoimh, Máire (2010). "Journey into tradition : a social history of the Irish button accordion". {{cite journal}}: Cite journal requires |journal= (help) https://ulir.ul.ie/handle/10344/1616
Snyder, Jared (1994). "Leadbelly and His Windjammer: Examining the African American Button Accordion Tradition". American Music. 12 (2): 148–166. doi:10.2307/3052520. ISSN 0734-4392. JSTOR 3052520. /wiki/Doi_(identifier)
Harrington, Helmi Strahl; Kubik, Gerhard (20 January 2001). "Accordion". Grove Music Online. doi:10.1093/gmo/9781561592630.article.46180. ISBN 9781561592630 – via Oxford Music Online. 9781561592630
Snyder, Jared (1994). "Leadbelly and His Windjammer: Examining the African American Button Accordion Tradition". American Music. 12 (2): 148–166. doi:10.2307/3052520. ISSN 0734-4392. JSTOR 3052520. /wiki/Doi_(identifier)
Snyder, Jared (1994). "Leadbelly and His Windjammer: Examining the African American Button Accordion Tradition". American Music. 12 (2): 148–166. doi:10.2307/3052520. ISSN 0734-4392. JSTOR 3052520. /wiki/Doi_(identifier)
Snyder, Jared (1994). "Leadbelly and His Windjammer: Examining the African American Button Accordion Tradition". American Music. 12 (2): 148–166. doi:10.2307/3052520. ISSN 0734-4392. JSTOR 3052520. /wiki/Doi_(identifier)
Eydmann, Stuart (1999). "As Common as Blackberries: The First Hundred Years of the Accordion in Scotland, 1830–1930". Folk Music Journal. 7 (5): 595–608. ISSN 0531-9684. JSTOR 4522630. /wiki/ISSN_(identifier)
Eydmann, Stuart (1999). "As Common as Blackberries: The First Hundred Years of the Accordion in Scotland, 1830–1930". Folk Music Journal. 7 (5): 595–608. ISSN 0531-9684. JSTOR 4522630. /wiki/ISSN_(identifier)
Snyder, Jared (1994). "Leadbelly and His Windjammer: Examining the African American Button Accordion Tradition". American Music. 12 (2): 148–166. doi:10.2307/3052520. ISSN 0734-4392. JSTOR 3052520. /wiki/Doi_(identifier)
Ní Chaoimh, Máire (2010). "Journey into tradition : a social history of the Irish button accordion". {{cite journal}}: Cite journal requires |journal= (help) https://ulir.ul.ie/handle/10344/1616
Eydmann, Stuart (1999). "As Common as Blackberries: The First Hundred Years of the Accordion in Scotland, 1830–1930". Folk Music Journal. 7 (5): 595–608. ISSN 0531-9684. JSTOR 4522630. /wiki/ISSN_(identifier)
Snyder, Jared (1994). "Leadbelly and His Windjammer: Examining the African American Button Accordion Tradition". American Music. 12 (2): 148–166. doi:10.2307/3052520. ISSN 0734-4392. JSTOR 3052520. /wiki/Doi_(identifier)
Snyder, Jared (1994). "Leadbelly and His Windjammer: Examining the African American Button Accordion Tradition". American Music. 12 (2): 148–166. doi:10.2307/3052520. ISSN 0734-4392. JSTOR 3052520. /wiki/Doi_(identifier)
Blogs, AMIS (13 September 2019). "The Bisonoric Button Accordion in Northeast Brazil". AMIS. Retrieved 26 May 2020. https://www.amis.org/post/the-bisonoric-button-accordion-in-northeast-brazil
Blogs, AMIS (13 September 2019). "The Bisonoric Button Accordion in Northeast Brazil". AMIS. Retrieved 26 May 2020. https://www.amis.org/post/the-bisonoric-button-accordion-in-northeast-brazil
Blogs, AMIS (13 September 2019). "The Bisonoric Button Accordion in Northeast Brazil". AMIS. Retrieved 26 May 2020. https://www.amis.org/post/the-bisonoric-button-accordion-in-northeast-brazil
Blogs, AMIS (13 September 2019). "The Bisonoric Button Accordion in Northeast Brazil". AMIS. Retrieved 26 May 2020. https://www.amis.org/post/the-bisonoric-button-accordion-in-northeast-brazil
Blogs, AMIS (13 September 2019). "The Bisonoric Button Accordion in Northeast Brazil". AMIS. Retrieved 26 May 2020. https://www.amis.org/post/the-bisonoric-button-accordion-in-northeast-brazil
Ní Chaoimh, Máire (2010). "Journey into tradition : a social history of the Irish button accordion". {{cite journal}}: Cite journal requires |journal= (help) https://ulir.ul.ie/handle/10344/1616
Sheehy, Daniel. "The Remarkable Rebirth of the Button Accordion". Smithsonian Magazine. Retrieved 24 May 2020. https://www.smithsonianmag.com/smithsonian-institution/remarkable-rebirth-button-accordion-180967626/
Sheehy, Daniel. "The Remarkable Rebirth of the Button Accordion". Smithsonian Magazine. Retrieved 24 May 2020. https://www.smithsonianmag.com/smithsonian-institution/remarkable-rebirth-button-accordion-180967626/
Sheehy, Daniel. "The Remarkable Rebirth of the Button Accordion". Smithsonian Magazine. Retrieved 24 May 2020. https://www.smithsonianmag.com/smithsonian-institution/remarkable-rebirth-button-accordion-180967626/
DeWitt, Mark F. (1 October 2017). "Cultural significance of the diatonic single-row button accordion in South Louisiana". The Journal of the Acoustical Society of America. 142 (4): 2570. Bibcode:2017ASAJ..142.2570D. doi:10.1121/1.5014395. ISSN 0001-4966. /wiki/Bibcode_(identifier)
DeWitt, Mark F. (1 October 2017). "Cultural significance of the diatonic single-row button accordion in South Louisiana". The Journal of the Acoustical Society of America. 142 (4): 2570. Bibcode:2017ASAJ..142.2570D. doi:10.1121/1.5014395. ISSN 0001-4966. /wiki/Bibcode_(identifier)
DeWitt, Mark F. (1 October 2017). "Cultural significance of the diatonic single-row button accordion in South Louisiana". The Journal of the Acoustical Society of America. 142 (4): 2570. Bibcode:2017ASAJ..142.2570D. doi:10.1121/1.5014395. ISSN 0001-4966. /wiki/Bibcode_(identifier)
Snyder, Jared (1994). "Leadbelly and His Windjammer: Examining the African American Button Accordion Tradition". American Music. 12 (2): 148–166. doi:10.2307/3052520. ISSN 0734-4392. JSTOR 3052520. /wiki/Doi_(identifier)
Snyder, Jared (1994). "Leadbelly and His Windjammer: Examining the African American Button Accordion Tradition". American Music. 12 (2): 148–166. doi:10.2307/3052520. ISSN 0734-4392. JSTOR 3052520. /wiki/Doi_(identifier)
Snyder, Jared (1994). "Leadbelly and His Windjammer: Examining the African American Button Accordion Tradition". American Music. 12 (2): 148–166. doi:10.2307/3052520. ISSN 0734-4392. JSTOR 3052520. /wiki/Doi_(identifier)
Harrington, Helmi Strahl; Kubik, Gerhard (20 January 2001). "Accordion". Grove Music Online. doi:10.1093/gmo/9781561592630.article.46180. ISBN 9781561592630 – via Oxford Music Online. 9781561592630
Harrington, Helmi Strahl; Kubik, Gerhard (20 January 2001). "Accordion". Grove Music Online. doi:10.1093/gmo/9781561592630.article.46180. ISBN 9781561592630 – via Oxford Music Online. 9781561592630
Harrington, Helmi Strahl; Kubik, Gerhard (20 January 2001). "Accordion". Grove Music Online. doi:10.1093/gmo/9781561592630.article.46180. ISBN 9781561592630 – via Oxford Music Online. 9781561592630
Snyder, Jared (1994). "Leadbelly and His Windjammer: Examining the African American Button Accordion Tradition". American Music. 12 (2): 148–166. doi:10.2307/3052520. ISSN 0734-4392. JSTOR 3052520. /wiki/Doi_(identifier)
Snyder, Jared (1994). "Leadbelly and His Windjammer: Examining the African American Button Accordion Tradition". American Music. 12 (2): 148–166. doi:10.2307/3052520. ISSN 0734-4392. JSTOR 3052520. /wiki/Doi_(identifier)
Sheehy, Daniel. "The Remarkable Rebirth of the Button Accordion". Smithsonian Magazine. Retrieved 24 May 2020. https://www.smithsonianmag.com/smithsonian-institution/remarkable-rebirth-button-accordion-180967626/
Sheehy, Daniel. "The Remarkable Rebirth of the Button Accordion". Smithsonian Magazine. Retrieved 24 May 2020. https://www.smithsonianmag.com/smithsonian-institution/remarkable-rebirth-button-accordion-180967626/
Sheehy, Daniel. "The Remarkable Rebirth of the Button Accordion". Smithsonian Magazine. Retrieved 24 May 2020. https://www.smithsonianmag.com/smithsonian-institution/remarkable-rebirth-button-accordion-180967626/
Sheehy, Daniel. "The Remarkable Rebirth of the Button Accordion". Smithsonian Magazine. Retrieved 24 May 2020. https://www.smithsonianmag.com/smithsonian-institution/remarkable-rebirth-button-accordion-180967626/
Sheehy, Daniel. "The Remarkable Rebirth of the Button Accordion". Smithsonian Magazine. Retrieved 24 May 2020. https://www.smithsonianmag.com/smithsonian-institution/remarkable-rebirth-button-accordion-180967626/
Blogs, AMIS (13 September 2019). "The Bisonoric Button Accordion in Northeast Brazil". AMIS. Retrieved 26 May 2020. https://www.amis.org/post/the-bisonoric-button-accordion-in-northeast-brazil
Blogs, AMIS (13 September 2019). "The Bisonoric Button Accordion in Northeast Brazil". AMIS. Retrieved 26 May 2020. https://www.amis.org/post/the-bisonoric-button-accordion-in-northeast-brazil
Blogs, AMIS (13 September 2019). "The Bisonoric Button Accordion in Northeast Brazil". AMIS. Retrieved 26 May 2020. https://www.amis.org/post/the-bisonoric-button-accordion-in-northeast-brazil