Button Accordion is type of accordion which evolves from the older and more basic melodeon. It was developed in the late 19th century. It has an extra row of buttons, pitched a semi-tone above or below those of the melodeon. Two notes can be sounded on one button by manipulating the bellows. A melodeon is a type of accordion. ... Alternative meaning: Nineteenth Century (periodical) (18th century — 19th century — 20th century — more centuries) As a means of recording the passage of time, the 19th century was that century which lasted from 1801-1900 in the sense of the Gregorian calendar. ...
The accordion is played by compression and expansion of a bellows, which generates air flow across reeds; a keyboard controls which reeds receive air flow and therefore the tones produced.
The piano accordion is the instrument most often indicated by the term "accordion", but it is one of the most recent inventions among accordion types, appearing late in the 19th century and not accepted worldwide until the early 20th century.
In Scotland, the favoured diatonic accordion is, paradoxically, the instrument known as the British Chromatic Accordion.
An instrument like a piano accordion can play all types of music equally well, but it is not as easy to learn and it will never be as good as a buttonaccordion at playing toe-tapping folk dance tunes.
This button is a duplication of reeds found in the same bellows direction in the outside row.
The "club" model of accordion is a special version of a 2 1/2 row instrument, it has a button on the treble side, in the middle of the inside row which plays the same note in both bellows directions.