Topmusicanswers
How are accordion buttons arranged?
It uses columns of buttons arranged in a circle of fifths. Each diagonal column has, in order from the innermost to outermost buttons: The major third above (or minor sixth below, depending on which note) the root ("counter-bass")
What are the buttons on a button accordion?
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.
...
Distribution of notes on the keyboard and range.
| Button | Push | Pull |
|---|---|---|
| 1 | C | D |
| 2 | E | F |
| 3 | G | A |
| 4 | C' | B |
