Système Argoat
A diatonic accordion tab that shows at a glance which button to play and which way the bellows go.
- Bellows
- Two lines: P for push, D for draw. A number on the P line is played pushing, on the D line drawing.
- Rows
- The number is the button’s, counted from the chin. An apostrophe (6’) means the inner row, no apostrophe the outer row; a double apostrophe (6’’) means the third row.
- Rhythm
- Numbers are placed in time: the more space, the longer the note. A dot marks each beat, a small tick the start of each bar.
- Held notes
- A grey line extends the number for as long as the note is held.
- Basses
- On the bottom line, the number is a bass group: a filled circle for the bass button, an empty one for the chord. They are played in the same bellows direction as the melody.
- Staff
- Standard notation can be shown above, aligned note for note, for those who read music.
Why another notation?
Existing tabs often mix push and draw on a single line, with symbols to learn. Système Argoat keeps what needs no explanation: two lines, two colours, button numbers placed in time.