B♭ Minor 6th Chord (Bbm6, A#m6) on Piano
The Bbm6 chord (Bb minor 6th) is built from 4 notes: Bb – Db – F – G. It is also written as A#m6.
Play these notes on a MIDI keyboard, your computer keyboard, or the on-screen keys and ChordKeys will name the chord back to you.
Notes and intervals
| Note | Degree | Interval from Bb | Semitones |
|---|---|---|---|
| Bb | 1 | root | 0 |
| Db | b3 | minor 3rd | 3 |
| F | 5 | perfect 5th | 7 |
| G | 6 | major 6th | 9 |
Inversions
Rearranging which note sits at the bottom gives you 4 playable voicings of the same chord. Inversions let you move between chords with less hand movement.
| Voicing | Notes | Bass note |
|---|---|---|
| Root position | Bb – Db – F – G | Bb in the bass |
| 1st inversion | Db – F – G – Bb | Db in the bass |
| 2nd inversion | F – G – Bb – Db | F in the bass |
| 3rd inversion | G – Bb – Db – F | G in the bass |
How the minor 6th chord is built
Every minor 6th chord uses the same interval formula: 1 (0 semitones), b3 (3 semitones), 5 (7 semitones), 6 (9 semitones). Starting on Bb and applying that formula produces Bb, Db, F, G. Learn the formula once and you can build a minor 6th chord on any of the twelve roots.
Keys that contain Bbm6
Every note of Bbm6 belongs to these keys, so it will sit naturally in a progression written in any of them.
Other chords on Bb
Minor 6th chords on other roots
Frequently asked questions
What notes are in a Bbm6 chord?
A Bbm6 chord contains the notes Bb, Db, F, G. Those are the 1, b3, 5, 6 degrees measured from the root note Bb.
How do you play Bbm6 on piano?
Place your thumb on Bb, then add Db and F and G above it. With a right hand in root position the common fingering is 1–2–3–5.
Is Bbm6 the same as A#m6?
Yes. Bbm6 and A#m6 are enharmonic equivalents — they sound identical and use the same piano keys. Which spelling you use depends on the key you are playing in.