About the B 9b5 Pentatonic scale
B 9b5 Pentatonic is used for jazz solos over altered and half-diminished chords. Think of it as a five-note scale with a minor third and a flat fifth.
Its notes are B, C♯, D, F, and A. The formula is W H 1½ 4 semitones W.
On the piano, B 9b5 Pentatonic touches the black key C♯.
Notes and intervals
| 1 | BB | Root |
|---|---|---|
| 2 | C#C♯ | Major 2nd |
| 3 | DD | Minor 3rd |
| 4 | FF | Diminished 5th |
| 5 | AA | Minor 7th |
| Steps | W H 1½ 4 semitones W |
|---|---|
| Semitones | 2-1-3-4-2 |
| Degrees | 1 2 ♭3 ♭5 ♭7 |
Shapes
Chromatic
Circle of Fifths
Related scales
9b5 Pentatonic in other keys
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