Ab11

Q: What notes are in the Ab11 chord?

The Ab11 chord (Ab 11th) contains: Ab, C, Eb, Gb, Bb, Db. Its interval structure is shown above in the Theory section.

Q: How do I build Ab11 on the keyboard?

Take the root and add the remaining chord tones following the interval formula. The highlight shows chord content, while the inversion control changes which chord tone is in the bass.

Q: Which keys is Ab11 found in?

The chord acts as a diatonic degree in several keys — they are marked on the circle of fifths in the "Harmonic context" block.

Q: What can I substitute for Ab11?

A substitution depends on harmonic function and voice leading, not only on shared tones. Computed options appear in the "Substitutions" block and should be checked in context.

Ab 11th

Octaves

Musical context

ChordAb majorTriad

ChordAb11Ab 11th

ArpeggioAb majorBroken triad

ScaleAb major7 notes

KeyAb majorMajor key

ProgressionPop axisSequence

How the chord relates to the scale, mode, key and progression.

Theory

General info

Full name: Ab 11th
Symbol: Ab11
Root: Ab
Quality: 11th

Chord notes

1Abroot

3Cmajor 3rd

5Ebperfect 5th

b7Gbminor 7th

2Bbmajor 2nd

4Dbperfect 4th

Functions & resolutions

Typical function in key: VDominant (V)C# major
Stability / tension: High tension — requires resolution
Most common resolutions: DbDb Major BbmBb Minor
Unstable degrees: 3C
4Db
resolves up to the resolution tonic
6F
b7Gb
resolves down to the tonic 3rd
3C
4Db
resolves down to the 3rd
Main resolution: Ab11source
DbDb Major
Dominant 7th Ab7 naturally resolves up a 4th to Db. It is the tritone between the chord's 3rd and 7th that creates this pull.
Other resolutions: Ab11source
Deceptive resolution
BbmBb Minor
Instead of the tonic, the dominant resolves to the vi degree. Creates surprise and is often used to extend a musical phrase.
Ab11source
Modal resolution
GbGb Major
In rock and blues, the dominant often moves to bVII or IV instead of the tonic, creating a modal flavor.
Ab11source
Jazz reharmonization
D7D Dominant 7
Tritone substitution: Ab7 can be replaced by D7 (a tritone away). Both chords share the same tritone between the 3rd and 7th, resolving to the same tonic.
Ab11source
Functional resolution
Absus4Ab Sus4
The dominant can resolve beyond the tonic: moving to IV (subdominant) or to a suspension (sus4) are common alternatives in pop and folk music.

Substitutions

Tritone substitution: D7D Dominant 7

Features

Character: Dominant, with 9th and 11th
Characteristic interval: Minor 7th (b7), 11th
Description: The minor 7th preserves dominant function, while the 3rd and 11th form a semitone dissonance that is usually separated by register.
Application: Funk, soul
Jazz fusion
Rhythm guitar à la Stevie Wonder

Voicing & structure

Root position

v1Ab(Ab4)Bass

root

v2C(C5)M3from Ab

v3Eb(Eb5)m3from C

v4Gb(Gb5)m3from Eb

v5Bb(Bb5)M3from Gb

v6Db(Db6)m3from Bb

Harmony

Compatible scales

All chord tones are contained in these scales — use them for improvisation.

ScaleC Locrian ScaleC Altered (super Locrian)ScaleC# Ionian (major)ScaleC# Melodic minor ScaleD# Dorian ScaleF# Lydian ScaleG# Mixolydian ScaleG# Mixolydian ♭6 ScaleA# Aeolian (natural minor)ScaleD Enigmatic scale

This chord on guitar 🎸

See how Ab11 looks on guitar.

Explore

Circle of fifths

Highlighted major keys contain this chord among their diatonic harmonies.

Relative key: FmF minor
Dominant: EbEb major
Subdominant: DbDb major
Key signature: 4 flats (Bb, Eb, Ab, Db)

What to learn next

ScaleAb MixolydianScale to improvise over this chord PracticeChord trainerLock the fingering into muscle memory ProgressionChord progressionsHow this chord works inside real progressions

Recommended for you

Ab MixolydianA scale related to this chord

Ab Chromatic scaleA scale related to this chord

Practice

Keyboard Trainer

Reinforce it in practice — play and name notes on the interactive keyboard.

Open Trainer

Test yourself

(Press any key to start)

What notes are in the Ab11 chord?

How do I build Ab11 on the keyboard?

Which keys is Ab11 found in?

What can I substitute for Ab11?