Construction
| Note | Interval | Degree |
|---|---|---|
| B♭ | Root | 1 |
| D♭ | Minor 3rd | ♭3 |
| F♯ | Minor 6th | ♯5 |
| A♭ | Minor 7th | ♭7 |
Fingering
| Note | Key color | Right hand | Left hand |
|---|---|---|---|
| B♭ | black | index finger (2) | little finger (5) |
| D♭ | black | middle finger (3) | ring finger (4) |
| F♯ | black | ring finger (4) | middle finger (3) |
| A♭ | black | little finger (5) | index finger (2) |
Right hand: index finger (2) on B♭, middle finger (3) on D♭, ring finger (4) on F♯, little finger (5) on A♭.
Left hand: little finger (5) on B♭, ring finger (4) on D♭, middle finger (3) on F♯, index finger (2) on A♭.
Key Signature
A chord has no key signature of its own, but the B♭ Minor 7♯5 is the tonic (i) chord of B♭ Minor, which shares the signature of its relative major, D♭ Major: 5 flats (B♭, E♭, A♭, D♭, G♭).
Order of flats
Flats are added in a fixed order — the reverse of the sharp order. Each new flat key adds the next flat on the list.
Mnemonic: Battle Ends And Down Goes Charles’ Father
Chords in the Key of B♭ Minor
These are the triads built on each degree of B♭ Minor:
Same Notes, Other Names
The notes B♭ – D♭ – F♯ – A♭ aren’t exclusive to this chord. Depending on which note is the bass and how the chord functions, the same pitches also spell: