C Mixolydian on a B/C button accordion
C Mixolydian uses C, D, E, F, G, A and B♭. On a B/C you can play the whole scale up from C4 and C5.
It has the same notes as F major, so the buttons are the same; what changes is the note the tune comes home to.
From C4 to C5
No single row has every note of this octave, so you have to cross between the rows. This is the way with the fewest changes of bellows: four going up, and four moves between rows.
| Note | Buttons |
|---|---|
| C4 | 3′ push |
| D4 | 3′ pull |
| E4 | 4 pull, 4′ push |
| F4 | 4′ pull |
| G4 | 5′ push |
| A4 | 5′ pull |
| B♭4 | 6 pull |
| C5 | 6′ push |
From C5 to C6
No single row has every note of this octave, so you have to cross between the rows. This is the way with the fewest changes of bellows: four going up, and four moves between rows.
| Note | Buttons |
|---|---|
| C5 | 6′ push |
| D5 | 7′ pull |
| E5 | 8 pull, 7′ push |
| F5 | 8′ pull |
| G5 | 8′ push |
| A5 | 9′ pull |
| B♭5 | 10 pull |
| C6 | 9′ push |
Above and below
From C3 the scale is incomplete: this box has no C3, D3 or F3. Tunes that go that far down will need a different note there, or a different key.
Tab is only the start
A scale shows where the notes are, but a tune rarely runs straight up the octave. Whether you play a note on the push or the pull depends on the notes either side of it, the rhythm, and whether you play along the rows or across them. Along or across the rows explains the difference.
Same notes, different home: F major, D minor, G Dorian.
C Mixolydian on other boxes: G/C melodeon.
Other keys on a B/C: G major, D major, A major, C major, F major, E major, E minor, A minor, B minor, D minor, G minor, A Dorian, E Dorian, D Dorian, B Dorian, G Dorian, D Mixolydian, A Mixolydian, G Mixolydian. Or see every key compared and the B/C button chart.