On the piano, the A11 chord is the dominant 11th chord built from A, C#, E, G, B, D. On piano it is played from the keys A, C#, E, G, B, D, root position first, then in inversions. Keep this page open while you practise: it lists the notes, every practical voicing, the mistakes that make it sound wrong and the progressions where it does its best work.
What notes are in the A11 chord?
The A11 chord is a dominant 11th chord, and its notes are fixed: A, C#, E, G, B, D. Every voicing on every instrument uses these same notes, in some order and in some octave — change one of them and you are playing a different chord. The table below lists each note with its interval from the root A, so you can see the structure of A11 at a glance. On the piano, the root-position keys A, C#, E, G, B, D show A11 most clearly.
| Note | Interval |
|---|---|
| A | Root |
| C# | 3 |
| E | 5 |
| G | b7 |
| B | 9 |
| D | 11 |
The root is A, the note the chord is named after and the note your ear hears as home. Above it, the intervals in A11 are 3, 5, b7, 9, 11. Learn those intervals rather than memorising the shape alone, because the same interval pattern transposed to another root gives you the same quality of chord anywhere. On the piano, the notes appear in the order the fingering dictates, but the set of notes never changes.
A11 sounds open and modern, the sound of jazz and fusion dominants. The colour is strongest when all the notes ring clearly. A muted chord tone, especially the 3rd or the 7th where the chord has one, flattens the character of A11 noticeably. On the piano, play the keys A, C#, E, G, B, D slowly and listen for each note of A11 in turn.
Comparing A11 with its closest relatives helps to fix it in your ear. In short, 11th against 9th: A11 adds the 11th D on top of the 9th B. In practice the 3rd is often left out of the voicing, because the 11th clashes with it. Practise the two chords back to back and listen to the one note that changes — that single note is the difference between the two chords. On the piano, A11 is the keys A, C#, E, G, B, D, and the inversions above move the same notes around.
How to play A11 on piano
On the piano, A11 is played from the keys A, C#, E, G, B, D. In root position the lowest note is A, the root, with the other notes stacked above it in the order A, C#, E, G, B, D. Play it with the right hand first, then with the left hand an octave lower, so both hands know the shape of A11 before you try it in a progression.
First inversion of A11 puts C# in the bass, with the notes in the order C#, E, G, B, D, A. The chord is still A11 — the notes have not changed, only their order — but the bass note changes how it connects to the chord before and after it. Use this inversion when the bass line wants to step to C# rather than jump to A, and practise moving from root position to this inversion without lifting your hand off the keys more than you must.
Second inversion of A11 puts E in the bass, with the notes in the order E, G, B, D, A, C#. The chord is still A11 — the notes have not changed, only their order — but the bass note changes how it connects to the chord before and after it. Use this inversion when the bass line wants to step to E rather than jump to A, and practise moving from root position to this inversion without lifting your hand off the keys more than you must.
Third inversion of A11 puts G in the bass, with the notes in the order G, B, D, A, C#, E. The chord is still A11 — the notes have not changed, only their order — but the bass note changes how it connects to the chord before and after it. Use this inversion when the bass line wants to step to G rather than jump to A, and practise moving from root position to this inversion without lifting your hand off the keys more than you must.
Because A11 has 6 notes, it has further inversions beyond the third, each one putting a different chord tone in the bass. The principle stays the same: the notes are always A, C#, E, G, B, D, and the inversion you choose is the one whose bass note makes the smoothest line through the progression. Try the Chord Inverter to see every inversion of A11 on the keyboard.
For fingering, a good starting point for A11 in root position in the right hand is thumb on A, then one finger per note in order, with the little finger on the top note D. For the left hand, mirror it: little finger on the low A and thumb on the top note. When a note is a black key — C# — let your longer fingers take it, since they reach the black keys more easily. Practise A11 in root position and first inversion, hands separately, then together, at a slow tempo, and use the Piano Chord Finder to check the voicing on the keyboard.
Common mistakes
These are the mistakes that most often make A11 sound wrong on the piano, and each one has a concrete fix. Work through them one at a time rather than trying to fix everything at once.
Playing the 11th too low. D low down sounds muddy against the root. Keep it high in the voicing. On the piano, A11 is the keys A, C#, E, G, B, D, and the inversions above move the same notes around.
Using it as a tonic. A11 is a dominant chord. It wants to resolve to the tonic. On the piano, play the keys A, C#, E, G, B, D slowly and listen for each note of A11 in turn.
Playing every inversion with the same hand shape. Each inversion of A11 needs its own hand shape, because the notes sit under different fingers. If you force the root-position fingering onto an inversion, the hand cramps and notes get missed. Learn the fingering for each inversion of A11 separately, hands apart, before you join them. On the piano, A11 is the keys A, C#, E, G, B, D, and the inversions above move the same notes around.
Playing the 3rd and 11th together. C# and D clash badly in the same octave. In an 11th chord the 3rd is usually omitted or placed far from the 11th. On the piano, A11 is the keys A, C#, E, G, B, D, and the inversions above move the same notes around.
Where A11 is used
A11 is not a diatonic triad in any major or minor key, because it is an extended or altered chord, but its base triad belongs to the key of D major, the key of E major, the key of A major. a V11 chord that resolves to the tonic with a suspended, open sound. As a dominant-type chord it also points toward D major, the key a perfect fourth above A, which is the tonic it most often resolves to. That is where A11 does its work: not as a home chord, but as a chord that creates movement and then resolves. On the piano, play the keys A, C#, E, G, B, D slowly and listen for each note of A11 in turn.
Because A11 is an extended or altered chord, it appears in progressions as a colour or a dominant rather than as a diatonic staple. Try it in place of the plain A triad in a progression you already know, and listen to how the extra notes change the feel — that substitution is the usual way extended chords enter real music. The Chord Progression Builder lets you try A11 in a progression in any key and hear how it connects to the chords around it. On the piano, play the keys A, C#, E, G, B, D slowly and listen for each note of A11 in turn.
The same chord on other instruments is covered in A11 on guitar, A11 on ukulele, A11 on bass, and the scales that fit over it are the A major scale and the A minor pentatonic scale. Learning A11 on the piano and then checking it on another instrument is one of the best ways to fix the notes — A, C#, E, G, B, D — in your memory, because the notes stay the same while everything else changes.
Practising A11
A short worked example makes A11 concrete. Play the four-chord progression D – A – Bm – G in D major, the key A11 most often resolves toward: D – A – Bm – G. Play each chord for one bar at a slow tempo, and listen to how A11 sounds in that sequence — whether it feels like home, like a lift, or like a chord on its way somewhere else. Then play the same four chords in a different order, starting on A11 itself, and notice how its character changes when it opens the progression instead of sitting inside it. On the piano, play the keys A, C#, E, G, B, D slowly and listen for each note of A11 in turn.
For a second exercise, play A11 and then the chord a fourth above A, back and forth, four times each. That move — a chord and the chord a fourth above it — is the most common resolution in Western music, and it is the move A11 is built for when it acts as a dominant. Finish by playing A11 on its own, slowly, and naming each note out loud as you play it: A, C#, E, G, B, D. Naming the notes while you play them is what turns a shape into knowledge you can use in any key. Test yourself with the Practice Chord Quiz and keep time with the Metronome as the tempo rises. On the piano, play the keys A, C#, E, G, B, D slowly and listen for each note of A11 in turn.
Frequently asked questions
Where is A11 used?
A11 is a dominant colour in jazz and fusion, used as a V11 that resolves to the tonic. It suits slow tempos and open voicings where its width can be heard. On the piano, check the root-position keys above for that note.
How do you play A11 on the piano?
In root position, play the keys A, C#, E, G, B, D, with A as the lowest note. That is the basic shape of A11 on the piano. The inversions above put a different note in the bass, and the Chord Inverter shows every inversion of A11 on the keyboard.
What is the first inversion of A11?
The first inversion of A11 puts C# in the bass, with the notes in the order C#, E, G, B, D, A. The chord is still A11 — only the bass note has changed — and it is the inversion to use when the bass line steps to C#.
Which fingers do you use for A11 on piano?
In the right hand, start with the thumb on A and one finger per note in order, ending with the little finger on D. In the left hand, mirror it with the little finger on the low A. Longer fingers take the black keys, so check which notes of A11 are black keys before you settle on a fingering.
What notes are in A11?
A11 contains A, C#, E, G, B, D: root, major 3rd, perfect 5th, flattened 7th, 9th and 11th. In practice the 3rd is often omitted from the voicing, because it clashes with the 11th. On the piano, check the root-position keys above for that note.