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A melodeon or diatonic button accordion is a member of the free-reed aerophone family of musical instruments. It is a type of button accordion on which the melody-side keyboard contains one or more rows of buttons, with each row producing the notes of a single diatonic scale.
A button accordion is a type of accordion on which the melody-side keyboard consists of a series of buttons. This differs from the piano accordion , which has piano-style keys. Erich von Hornbostel and Curt Sachs categorize it as a free reed aerophone in their classification of instruments , published in 1914. [ 1 ]
Chromatic button accordion; Classification: Free-reed aerophone: Playing range; Right-hand manual: The Russian bayan and chromatic button accordions have a much greater right-hand range in scientific pitch notation than an accordion with a piano keyboard: five octaves plus a minor third (written range = E2-G7, actual range = E1-D9, some have a 32 ft Register on the Treble to go even lower down ...
An isomorphic keyboard is a musical input device consisting of a two-dimensional grid of note-controlling elements (such as buttons or keys) on which any given sequence and/or combination of musical intervals has the "same shape" on the keyboard wherever it occurs – within a key, across keys, across octaves, and across tunings.
Bayan; Classification: Free-reed aerophone: Hornbostel–Sachs classification: 412.132: Playing range; Right-hand manual: The Russian bayan and chromatic button accordions have a much greater right-hand range in scientific pitch notation than accordions with a piano keyboard: five octaves, plus a minor third (written range = E2-G7, actual range = E1-C#8).
The right keyboard layout in C major. The layout is also unique. The outer row buttons correspond to the notes on the staff line while the inner row buttons - to the note between the lines. The three top buttons, one of the inner row and two of the outer row, are accidentals (G#, D#, F#).
Accordions with five rows are used mostly in Austria. On the compression of the bellows, the buttons of one row play the tones from the key's tonic, and on the expansion of the bellows, the buttons of one row play tones from the key's dominant seventh. The button which plays the same tone on both the expansion and compression of the bellows is ...
96-button Stradella bass layout on an accordion. C is in the middle of the root note row. The Stradella Bass System (sometimes called [1] standard bass) is a buttonboard layout equipped on the bass side of many accordions, which uses columns of buttons arranged in a circle of fifths; this places the principal major chords of a key (I, IV and V) in three adjacent columns.