About the B flat Ultra Locrian scale
B flat Ultra Locrian is used for jazz over diminished dominant chords and extreme, dissonant writing. Think of it as the darkest locrian of all, lowered all the way to a double-flat seventh.
Its notes are B♭, C♭, D♭, E♭♭, F♭, G♭, and A♭♭. The formula is H W H W W H 1½. It is the seventh mode of C♭ Harmonic Minor.
Also called Altered Diminished.
B♭ Ultra Locrian uses three black keys on the piano, B♭, D♭, and G♭.
Chords in the key of B flat Ultra Locrian
Expand a chord to see how to play it.
B flat diminished over D flat (1st inversion)
C flat minor over E double flat (1st inversion)
D flat diminished over F flat (1st inversion)
E double flat augmented over G flat (1st inversion)
F flat minor over A double flat (1st inversion)
G flat over B flat (1st inversion)
A double flat over C flat (1st inversion)
Seventh chords in B flat Ultra Locrian
The four-note version of each chord, richer and jazzier.
B flat diminished seven
C flat minor major seven
D flat minor seven flat five
E double flat major seven sharp five
F flat minor seven
G flat seven
A double flat major seven
Notes and intervals
| 1 | BbB♭ | Root |
|---|---|---|
| 2 | CbC♭ | Minor 2nd |
| 3 | DbD♭ | Minor 3rd |
| 4 | EbbE♭♭ | Diminished 4th |
| 5 | FbF♭ | Diminished 5th |
| 6 | GbG♭ | Minor 6th |
| 7 | AbbA♭♭ | Diminished 7th |
| Steps | H W H W W H 1½ |
|---|---|
| Semitones | 1-2-1-2-2-1-3 |
| Degrees | 1 ♭2 ♭3 ♭4 ♭5 ♭6 ♭♭7 |
Fingering
Suggested fingering, follows standard fingering rules
| Hand | B flat | C flat | D flat | E double flat | F flat | G flat | A double flat | B flat |
|---|---|---|---|---|---|---|---|---|
| Right hand | 2 | 3 | 4 | 1 | 2 | 3 | 1 | 2 |
| Left hand | 4 | 3 | 2 | 1 | 3 | 2 | 1 | 4 |
Shapes
Chromatic
Circle of Fifths
Related scales
Ultra Locrian in other keys
Modes
The same notes, starting on a different note.
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