Squeezebox Studio
Scale

B minor on a D/G melodeon

B minor uses B, C♯, D, E, F♯, G and A. On a D/G you can play the whole scale up from B4 and B5.

It has the same notes as D major, so the buttons are the same; what changes is the note the tune comes home to.

From B4 to B5

Push, above the linePull, below the line

Every note of this octave is on the D row, so you can play it without leaving the row. That takes six changes of bellows going up.

Crossing the rows cuts that to two changes of bellows, at the cost of four moves between rows:

G rowinsideF5E♭51'D4F♯42'G4A43'B4C54'D5E55'G5F♯56'B5A57'D6C68'G6E69'B6F♯610'D rowoutsideG♯4B♭41A3C♯42D4E43F♯4G44A4B415D53C♯526F♯55E547A57G568D6B589F♯6C♯610A6E611
The first way, marked on the box: numbers give the order, blue halves are push and orange are pull.
Every button for each note of this octave
NoteButtons
B45 pull, 4′ push
C♯56 pull
D56 push, 5′ push
E57 pull, 5′ pull
F♯57 push, 6′ pull
G58 pull, 6′ push
A58 push, 7′ pull
B59 pull, 7′ push

From B5 to B6

Push, above the linePull, below the line

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: three going up, and three moves between rows.

G rowinsideF5E♭51'D4F♯42'G4A43'B4C54'D5E55'G5F♯56'B5A57'D6C68'G66E649'B68F♯6510'D rowoutsideG♯4B♭41A3C♯42D4E43F♯4G44A4B45D5C♯56F♯5E57A5G58D63B519F♯6C♯6210A67E611
The same way, marked on the box: numbers give the order, blue halves are push and orange are pull.
Every button for each note of this octave
NoteButtons
B59 pull, 7′ push
C♯610 pull
D69 push, 8′ push
E611 pull, 9′ pull
F♯610 push, 10′ pull
G69′ push
A611 push
B610′ push

Above and below

From B3 the scale is incomplete: this box has no B3. 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: D major, E Dorian, A Mixolydian.

B minor on other boxes: G/C melodeon, B/C button accordion.

Other keys on a D/G: G major, D major, C major, E minor, A minor, A Dorian, E Dorian, D Dorian, D Mixolydian, A Mixolydian, G Mixolydian. Or see every key compared and the D/G button chart.