A#11 Chord on Guitar
A#11 = A# – D – F – G# – C – D# (Root, Major 3rd, Perfect 5th, Minor 7th, Major 9th, Perfect 11th)
A#11, written Bb11 on most charts, is where the six-string reach of a stacked dominant chord genuinely runs out of room, so guitarists handle it the way keyboard players do — the major third gets dropped entirely, since a natural eleventh sitting right next to it would clash. What remains at the sixth-fret barre looks and plays almost like a 7sus4 shape.
Full theory gives A#, D, F, G#, C, D# for A#11, but the practical guitar voicing keeps essentially root, flat seventh, and eleventh — A#, G#, D# — letting the fourth stand in for the missing third. As an extended dominant it still leans toward D#/Eb major the way A#7 or A#9 does, but with a floatier, less committed color that avoids sounding squarely major or minor.
Fingerings
Barre (6th fret)
How to Practice It
Play A#7sus4 immediately after A#11 to hear how close the two shapes actually sound once the third is gone from both — a reminder that a chord's whole character often rides on just one or two notes rather than the full theoretical stack. Listen for the eleventh's slightly suspended quality against a plain dominant seventh voiced at the same fret.
Common Progressions
- A#11 – D# (V11 – I, a hazier resolution than plain V – I)
- G#maj7 – A#11 – D# (a suspended-feeling turnaround into Eb major)
- A#11 – A#7 – D# (contrasting the suspended and resolved dominant colors)
- D# – A#11 – D# (I – V11 – I as a static vamp)
FAQ
- Why does the guitar voicing of A#11 skip the third?
- The natural eleventh sits a half step above the major third, and sounding both together produces a harsh clash, so the third is left out and the eleventh carries that part of the chord's identity instead.
- Is A#11 basically the same as A#7sus4?
- The two voicings look and sound very close on guitar since both typically drop the third and emphasize the fourth, though A#11 theoretically implies the fuller stack through the ninth as well.
- What key does A#11 resolve toward?
- Eb (D#) major — the same target as A#7 or A#9 — just with a hazier, less sharply defined dominant color thanks to the missing third.
- Why isn't A#11 common in mainstream pop or rock?
- Its ambiguous, suspended quality doesn't give the strong major-or-minor pull that simpler songwriting often relies on, so it's more at home in jazz, funk, and modal material comfortable with unresolved harmonic color.
- Is the A#11 fingering a big jump from A#7?
- Not really — it mostly redistributes which finger frets which string rather than adding significant new stretch, since both are lean voicings from the same barre position.
- Can A#11 imply an A# minor sound?
- Informally yes, since without a clear major third the chord doesn't commit strongly to major, letting a player use it to sit ambiguously between major and minor territory even though it isn't a true minor chord.
- How does A#11 compare to A#13 in density?
- A#11 is the leaner of the two, since standard A#13 voicings often bring the third back alongside the thirteenth, while A#11's whole identity depends on the third staying out of the picture.
- Can A#11 be played with an A-shape barre instead?
- Not comfortably — the reduced voicing already asks for an awkward stretch in E-shape form, and cramming the same notes into an A-shape barre near the first fret rarely improves on just using the sixth-fret shape.
- Why does A#11 sound closer to a suspended chord than a full jazz extension?
- Because the practical voicing drops the third and leans on the fourth in its place, the ear mostly hears a suspended color, even though the chord's full name promises a much richer, more stacked-up harmony than what's actually being played.
- Is A#11 easy to mistake for plain A#7 by ear?
- It can be at a glance, since both are dominant chords built on the same root, but A#11's added fourth gives it a distinctly hazier edge once a listener knows to listen for that suspended quality.
- Do arrangers write the full 11-chord stack on piano even though guitar can't manage it?
- Yes — keyboard instruments can voice more of an 11th chord's full stack across two hands, which is part of why guitar's reduced version sounds leaner than an arranger's full piano chart might suggest.
- Is the eleventh ever raised instead of left natural?
- In more chromatic jazz harmony, yes — a sharp eleventh creates a different, more Lydian-flavored color, though the natural eleventh used in this standard voicing is by far the more common default.
Related: how chords are built, chord finder.