A♯11 Chord: Guitar, Piano and Notes
The A♯11 chord is a dominant eleventh chord built on the root note A♯. Its notes are A♯, E♯, G♯, B♯ and D♯. It's enharmonically the same chord as B♭11.
Dominant eleventh chords sound wide and suspended. The eleventh sits a half step above the major third that would normally anchor the chord, a clash sharp enough that the third is left out entirely and the fifth, seventh, ninth and eleventh do the talking.
- Notes
- A♯ · E♯ · G♯ · B♯ · D♯
- Formula
- 1 · 5 · ♭7 · 9 · 11
- Semitones
- 0 · 7 · 10 · 14 · 17
- Note
- A♯
- Quality
- Dominant 11
- Symbol
- A♯11
A♯11 on piano
5 notes
Switch to the interactive diagram to hear the chord, change voicing and swap finger numbers for note names.
To play A♯11 on piano, place your right hand with your thumb on A♯, index finger on B♯, middle finger on D♯, ring finger on E♯ and little finger on G♯. Press the keys together and listen for an even sound. On the keyboard A♯, G♯ and D♯ are black keys and E♯ and B♯ are white, the keys you'd normally call F and C. The thumb starts on a black key, so slide the whole hand a little further in, towards the fallboard. Practice moving in and out of the chord slowly, then bring in a metronome.
- A♯1
- B♯9
- D♯11
- E♯5
- G♯♭7
A♯11 on guitar
Switch to the interactive diagram to hear the chord, change voicing and swap finger numbers for note names.
On guitar, A♯11 is commonly played with the voicing shown above. This one is a barre at fret 1: keep the index finger flat across the strings and curve the others so they don't mute the strings next to them. Don't play string 6.
A♯ · E♯ · G♯ · B♯ · D♯
Try A♯11 on the virtual piano
Free, in your browser: play with the mouse, your computer keyboard or a USB MIDI keyboard. No sign-up.
A♯11 chord notes
Also known as B♭11
| Degree | Interval | Semitones | Note | Hear |
|---|---|---|---|---|
| 1 | Root | 0 | A♯(A#) | |
| 5 | Perfect fifth | 7 | E♯(E#) | |
| ♭7 | Minor seventh | 10 | G♯(G#) | |
| 9 | Major ninth | 14 | B♯(B#) | |
| 11 | Perfect eleventh | 17 | D♯(D#) |
How to use the A♯11 chord
The A♯11 chord is built from a root, a perfect fifth, a minor seventh, a major ninth and a perfect eleventh. Start at the root A♯ and stack the intervals to get the whole chord: A♯, E♯, G♯, B♯ and D♯. The same formula gives you the chord in any other key.
Dominant eleventh chords show up in modal jazz and gospel as a suspended, unresolved colour, often standing in for a sus4 with extra shimmer on top. They work best in slow-moving vamps rather than fast cadences.
How A♯11 differs from similar chords
A♯11 stacks a ninth and an eleventh on A♯7, and the eleventh is the same note as the fourth. Because that fourth clashes with the major third, the third is left out, so the chord sounds close to A♯7sus4 with a ninth. It differs from A♯13, which keeps the third and adds the sixth an octave up.
Where A♯11 is used
No progression is shown for this spelling
Every key A♯11 would have a function in has a tonic that needs a double accidental, which is not a key this library teaches. The enharmonic spelling carries the same chord in a key that exists.
Questions people ask
- What notes are in the A♯11 chord?
- The A♯11 chord contains A♯, E♯, G♯, B♯ and D♯ (A#, E#, G#, B# and D# in plain text).
- Is the A♯11 chord major or minor?
- A♯11 is a dominant eleventh chord. Dominant eleventh chords sound wide and suspended. The eleventh sits a half step above the major third that would normally anchor the chord, a clash sharp enough that the third is left out entirely and the fifth, seventh, ninth and eleventh do the talking.
- How do you play A♯11 on piano?
- Place your fingers on A♯, E♯, G♯, B♯ and D♯ and play them together. The root usually goes to the little finger of the left hand, the upper notes to the right. On the keyboard A♯, G♯ and D♯ are black keys and E♯ and B♯ are white, the keys you'd normally call F and C. The thumb starts on a black key, so slide the whole hand a little further in, towards the fallboard.
- How do you play A♯11 on guitar?
- Use the fingering in the diagram above. This one is a barre at fret 1: keep the index finger flat across the strings and curve the others so they don't mute the strings next to them. Don't play string 6.
- What is another name for the A♯11 chord?
- A♯11 is enharmonically equivalent to B♭11. Both chord names describe exactly the same notes, but the spelling depends on the key you are playing in.