B♭ Harmonic Minor Scale: Notes, Chords, and How to Play It
The B♭ harmonic minor scale is a key that sits comfortably in brass and wind instrument ranges, making it a favourite in orchestral and ensemble writing. It differs from B♭ natural minor by a single note — the seventh degree is raised from A♭ to A — creating the leading tone and the characteristic augmented second between G♭ and A that define the harmonic minor sound.
Notes of the B♭ Harmonic Minor Scale
The B♭ harmonic minor scale contains seven notes:
B♭ – C – D♭ – E♭ – F – G♭ – A
It follows the harmonic minor interval pattern — W–H–W–W–H–3H–H — where 3H represents the augmented second (three half steps) between the sixth and seventh degrees (G♭ to A).
| Degree | Note | Interval from Root | Step to Next |
|---|---|---|---|
| 1 (Root) | B♭ | Unison | Whole step |
| 2 | C | Major 2nd | Half step |
| ♭3 | D♭ | Minor 3rd | Whole step |
| 4 | E♭ | Perfect 4th | Whole step |
| 5 | F | Perfect 5th | Half step |
| ♭6 | G♭ | Minor 6th | Aug. 2nd (3H) |
| 7 | A | Major 7th | Half step |
| 8 | B♭ | Octave | – |
Compared to B♭ natural minor (B♭–C–D♭–E♭–F–G♭–A♭), only A♭ changes to A. This raises the seventh from a minor 7th to a major 7th, creating the half-step pull from A to B♭.
The augmented second between G♭ and A is the scale’s defining interval — a flat note leaping to a natural note across three half steps.
For a broader look at the three minor scale types, see Minor Scales: Natural, Harmonic, and Melodic.
B♭ Harmonic Minor on Piano
On the piano, B♭ harmonic minor uses four flats (B♭, D♭, E♭, G♭) with the raised seventh returning to the white key A. The hand navigates a mix of black and white keys.
Right hand fingering (ascending): 2 – 1 – 2 – 3 – 1 – 2 – 3 – (4) (flexible fingering due to the black-key pattern)
Left hand fingering (ascending): 3 – 2 – 1 – 3 – 2 – 1 – 3 – (2) (thumb crosses under smoothly between groupings)
The augmented second from G♭ (black) to A (white) is the widest step in the scale. Practise this transition carefully to maintain even rhythm.
B♭ Harmonic Minor on Guitar
On guitar, B♭ harmonic minor is commonly played starting at the 6th fret of the 6th string or the 1st fret of the 5th string.
Position at 1st fret (5th string root):
| String | Fret | Note |
|---|---|---|
| 5th (A) | 1 | B♭ |
| 5th (A) | 3 | C |
| 5th (A) | 4 | D♭ |
| 4th (D) | 1 | E♭ |
| 4th (D) | 3 | F |
| 4th (D) | 4 | G♭ |
| 3rd (G) | 2 | A |
| 3rd (G) | 3 | B♭ |
The augmented second from G♭ to A spans four frets on a single string — the physical fingerprint of harmonic minor on the fretboard.
Use the guitar fretboard view in the Interactive Chord Finder to see all positions.
Diatonic Chords in B♭ Harmonic Minor
Building triads on each degree:
| Degree | Chord | Quality | Notes |
|---|---|---|---|
| i | B♭m | Minor | B♭ – D♭ – F |
| ii° | Cdim | Diminished | C – E♭ – G♭ |
| III+ | D♭aug | Augmented | D♭ – F – A |
| iv | E♭m | Minor | E♭ – G♭ – B♭ |
| V | F | Major | F – A – C |
| VI | G♭ | Major | G♭ – B♭ – D♭ |
| vii° | Adim | Diminished | A – C – E♭ |
Key features:
The V chord is major (F major, not F minor). The raised A turns v into V, creating the strong F–B♭m cadence.
The III chord is augmented (D♭aug), the characteristic harmonic minor colour.
For more on diatonic chord construction, see Diatonic Chords: A Beginner’s Guide.
Seventh Chords
| Degree | Chord | Quality | Notes |
|---|---|---|---|
| imMaj7 | B♭m(maj7) | Minor-major 7th | B♭ – D♭ – F – A |
| iiø7 | Cm7♭5 | Half-diminished | C – E♭ – G♭ – B♭ |
| III+maj7 | D♭maj7♯5 | Aug. major 7th | D♭ – F – A – C |
| iv7 | E♭m7 | Minor 7th | E♭ – G♭ – B♭ – D♭ |
| V7 | F7 | Dominant 7th | F – A – C – E♭ |
| VImaj7 | G♭maj7 | Major 7th | G♭ – B♭ – D♭ – F |
| vii°7 | Adim7 | Diminished 7th | A – C – E♭ – G♭ |
The V7 (F7) provides the dominant seventh pull to B♭m. For more on seventh chords, see Seventh Chords: The Complete Guide.
Common Chord Progressions in B♭ Harmonic Minor
| Progression | Chords | Character |
|---|---|---|
| i – iv – V – i | B♭m – E♭m – F – B♭m | Classic minor cadence |
| i – VI – V – i | B♭m – G♭ – F – B♭m | Andalusian flavour |
| V – i | F – B♭m | Strong authentic cadence |
| iv – V – i | E♭m – F – B♭m | Half cadence to resolution |
| i – iv – V7 – i | B♭m – E♭m – F7 – B♭m | Classical/jazz minor |
| i – VII – VI – V | B♭m – A♭ – G♭ – F | Descending bass line |
Music That Uses B♭ Harmonic Minor
B♭ harmonic minor appears in works requiring emotional depth:
- Chopin’s Scherzo No. 2 in B♭ minor – dramatic harmonic minor passages
- Tchaikovsky’s Piano Concerto No. 1 – B♭ minor sections with strong V–i cadences
- Orchestral film scores – B♭ harmonic minor suits the range of brass instruments
- Middle Eastern and North African music – the augmented second evokes traditional maqam
- Jazz ballads – the minor-major seventh chord (B♭m(maj7)) appears in sophisticated arrangements
Relationship to Other Minor Scales
| Scale | Notes | Difference |
|---|---|---|
| B♭ natural minor | B♭ – C – D♭ – E♭ – F – G♭ – A♭ | ♭7 (no leading tone) |
| B♭ harmonic minor | B♭ – C – D♭ – E♭ – F – G♭ – A | Raised 7 (leading tone, aug. 2nd) |
| B♭ melodic minor | B♭ – C – D♭ – E♭ – F – G – A | Raised 6 and 7 (smooth, no aug. 2nd) |
The natural minor has A♭ as the seventh, lacking the leading-tone pull. Harmonic minor raises it to A, creating strong resolution but introducing the augmented second (G♭ to A). Melodic minor also raises G♭ to G, smoothing that interval.
Practice Tips
Start from B♭ natural minor. Raise A♭ to A and you have harmonic minor — one note makes the difference.
Isolate the augmented second. Practise G♭ to A until the interval is comfortable in both directions.
Practise the V–i cadence. Play F major to B♭ minor, then F7 to B♭m. The pull of A resolving to B♭ is the harmonic core.
Transpose familiar melodies. Take a melody you know in A harmonic minor and transpose it to B♭ harmonic minor. This builds fluency across keys.
Use a metronome. Start at 60 BPM and increase only when every note is clean and rhythmically even.
Try It Yourself
Open the Interactive Chord Finder, select B♭ as the root and Harmonic Minor as the scale. You will see every note highlighted on the piano keyboard or guitar fretboard, the step pattern visualised as intervals, and all diatonic chords laid out — ready to play and explore.
For the complete list of scales in every key, see Scales for Piano and Guitar: The Complete Reference Guide.
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