About the D Vietnamese scale
D Vietnamese is used for Vietnamese-flavored and folk melodies. Think of it as a dark five-note scale with a minor third and flat sixth.
Its notes are D, F, G, A, and B♭. The formula is 1½ W W H 4 semitones.
D Vietnamese uses one black key on the piano, B♭. This mode lines up four white keys back to back.
Notes and intervals
| 1 | DD | Root |
|---|---|---|
| 2 | FF | Minor 3rd |
| 3 | GG | Perfect 4th |
| 4 | AA | Perfect 5th |
| 5 | BbB♭ | Minor 6th |
| Steps | 1½ W W H 4 semitones |
|---|---|
| Semitones | 3-2-2-1-4 |
| Degrees | 1 ♭3 4 5 ♭6 |
Shapes
Chromatic
Circle of Fifths