A#m7 Chord on Ukulele
A#m7 = A# – C# – F – G# (Root, Minor 3rd, Perfect 5th, Minor 7th)
Bbm7 is the rare ukulele seventh chord that reduces to a single full barre: lay the index finger flat across all four strings at the first fret, and the four notes produced — Bb, Db, F, Ab — spell out a complete minor seventh chord with no other fingers involved. It's a striking contrast to Bbm's three-string barre with an extra reaching finger, since adding the seventh here actually simplifies the shape rather than complicating it, purely because of where the notes happen to fall on the fretboard.
Minor seventh chords have a smoother, less urgent pull than plain minor triads, since the added seventh softens the chord's edges and gives it a more contemplative, jazz-adjacent color. Bbm7 functions as the ii7 chord in the key of Ab major, the classic starting point of a ii-V-I cadence into that key, and as the vi7 chord in the key of Db major, a softer substitute for a plain vi chord wherever a song wants added color without extra fingering difficulty. Because the entire chord is one continuous barre with no open strings and no independently placed fingers, it also has an unusually even, blended tone across all four strings compared to shapes that mix fretted and open notes, or fretted notes at different frets.
Fingerings
Open Position
How to Practice It
Since this is a genuine full barre, the usual barre-chord fundamentals apply directly: keep the index finger close to the fret wire rather than in the middle of the fret space, angle the finger slightly so its side rather than its flat pad makes contact, and check all four strings ring cleanly with individual plucks before strumming. Because there's nothing else to place, the entire practice value here is in barre technique itself — try lifting the finger completely off the strings and replanting the full barre repeatedly, since that clean placement is exactly the skill this particular chord trains better than almost any other shape on the instrument. The Bbm-to-Bbm7 change is also worth isolating, since it only requires extending the existing three-string barre to cover the fourth string while releasing the ring finger's separate note.
Common Progressions
- ii7 – V7 – I, a jazz cadence into Ab major (Bbm7 – Eb7 – Ab)
- vi7 – IV – I, in the key of Db (Bbm7 – Gb – Db)
- i7 – iv – v, treating Bbm7 as its own minor tonic (Bbm7 – Ebm – F7)
- Bbm7 substitutes cleanly for plain Bbm wherever a chart wants a softer, jazzier color.
FAQ
- Is Bbm7 really just a single barre across all four strings?
- Yes — barring the first fret straight across G, C, E, and A produces exactly Bb, Db, F, and Ab, the full four notes of a Bb minor seventh chord, with no other finger needed.
- Why does adding a seventh make this shape easier, not harder?
- It's simply where the notes fall on the fretboard — the seventh, Ab, happens to sit at the same first fret as the rest of the chord, so extending an existing barre reaches it for free.
- Where does Bbm7 typically appear in a progression?
- As the ii7 chord in Ab major, opening a classic ii-V-I cadence, and as the vi7 chord in Db major, a common softer substitute for a plain vi chord.
- What's the best way to practice a full barre chord like this?
- Lift the finger completely away from the strings and replant the barre repeatedly, checking all four strings ring cleanly each time, since clean, repeatable placement is the actual skill being built.
- Does Bbm7 sound noticeably different from Bbm played back to back?
- Yes — the added seventh, Ab, softens the minor triad's darker edge into something more contemplative, so switching between the two chords is a useful way to hear exactly what a seventh degree contributes to a minor sound.
- Why is a full barre often considered a milestone chord shape to master?
- It removes any dependence on open strings or separately placed fingers, forcing consistent pressure and angle across the entire hand, which is a technique that transfers directly to countless other chords further up the neck.
- Does Bbm7 show up in genres beyond jazz?
- Yes — minor seventh chords are common in R&B, neo-soul, and a good deal of contemporary pop, since their softer, less final color fits a wider range of moods than the jazz-cadence examples might suggest.
A#m7 on other instruments: A#m7 on Guitar, A#m7 on Piano. Related: how chords are built, chord finder.