The B♭ Double Harmonic scale contains seven notes: B♭, C♭, D, E♭, F, G♭, and A. It follows the whole-step / half-step pattern H-A2-H-W-H-A2-H.
B♭ Double Harmonic Scale Notes
| Degree | Name | Note | Interval |
|---|---|---|---|
| 1 | Tonic | B♭ | P1 |
| 2 | Supertonic | C♭ | m2 |
| 3 | Mediant | D | M3 |
| 4 | Subdominant | E♭ | P4 |
| 5 | Dominant | F | P5 |
| 6 | Submediant | G♭ | m6 |
| 7 | Leading Tone | A | M7 |
| 8 | Octave | B♭ | — |
Key Signature
The B♭ Double Harmonic Scale doesn’t line up with a single major or minor key, so it has no standard key signature. Its notes are written with accidentals as needed.
Accidentals
Diatonic Chords in the B♭ Double Harmonic Scale
These are the triads built on each degree of the B♭ Double Harmonic Scale:
| Degree | Numeral | Chord | Quality |
|---|---|---|---|
| 1 | I | B♭ Major | Major |
| 2 | II | C♭ Major | Major |
| 3 | iii | D Minor | Minor |
| 4 | iv | E♭ Minor | Minor |
| 5 | V | F altered | altered |
| 6 | VI+ | G♭ Augmented | Augmented |
| 7 | VII | A altered | altered |