Dbaug9

Q: What notes are in the Dbaug9 chord?

The Dbaug9 chord (Db Aug 9) contains: Db, F, A, Cb, Eb. Its interval structure is shown above in the Theory section.

Q: How do I build Dbaug9 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 Dbaug9 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 Dbaug9?

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.

Db Aug 9

Octaves

Musical context

ChordDbaugTriad

ChordDbaug9Db Aug 9

ArpeggioDb majorBroken triad

ScaleDb major7 notes

KeyDb majorMajor key

ProgressionPop axisSequence

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

Theory

General info

Full name: Db Aug 9
Symbol: Dbaug9
Root: Db
Quality: Aug 9

Chord notes

1Dbroot

3Fmajor 3rd

#5Aaug 5th

b7Cbminor 7th

2Ebmajor 2nd

Functions & resolutions

Stability / tension: High tension — requires resolution
Most common resolutions: GbGb Major EbmEb Minor
Unstable degrees: 3F
4Gb
resolves up to the resolution tonic
#5A
6Bb
resolves up to the tonic 3rd
6Bb
b7B
resolves down to the tonic 3rd
Main resolution: Dbaug9source
GbGb Major
Dominant 7th Db7 naturally resolves up a 4th to Gb. It is the tritone between the chord's 3rd and 7th that creates this pull.
Other resolutions: Dbaug9source
Deceptive resolution
EbmEb Minor
Instead of the tonic, the dominant resolves to the vi degree. Creates surprise and is often used to extend a musical phrase.
Dbaug9source
Modal resolution
BB Major
In rock and blues, the dominant often moves to bVII or IV instead of the tonic, creating a modal flavor.
Dbaug9source
Jazz reharmonization
G7G Dominant 7
Tritone substitution: Db7 can be replaced by G7 (a tritone away). Both chords share the same tritone between the 3rd and 7th, resolving to the same tonic.
Dbaug9source
Functional resolution
Dbsus4Db 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: G7G Dominant 7

Features

Character: Dominant, with 9th and augmented 5th
Characteristic interval: Augmented 5th (#5), 9th
Description: The augmented 5th destabilises the triadic core, the minor 7th preserves dominant function, and the major 9th extends the chord. The #5 alteration intensifies chromatic voice leading.
Application: V+ → I in jazz
Altered blues
Passing chords

Voicing & structure

Root position

v1Db(Db4)Bass

root

v2F(F4)M3from Db

v3A(A4)M3from F

v4Cb(Cb4)M2from A

v5Eb(Eb5)M3from Cb

Harmony

Compatible scales

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

ScaleC# Whole tone scale ScaleD# Whole tone scale ScaleF Whole tone scale ScaleA Whole tone scale ScaleB Whole tone scale ScaleG Whole tone scale ScaleC# Mixolydian ♭6 ScaleF Enigmatic scale ScaleF Altered (super Locrian)ScaleA Lydian augmented

This chord on guitar 🎸

See how Dbaug9 looks on guitar.

Explore

Circle of fifths

Highlighted major keys contain this chord among their diatonic harmonies.

Relative key: BbmBb minor
Dominant: AbAb major
Subdominant: F#F# major
Key signature: 5 flats (Bb, Eb, Ab, Db, Gb)

What to learn next

ScaleC# Chromatic scaleScale to improvise over this chord PracticeChord trainerLock the fingering into muscle memory ProgressionChord progressionsHow this chord works inside real progressions

Recommended for you

C# Chromatic scaleA scale related to this chord

Practice

Keyboard Trainer

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

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Test yourself

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What notes are in the Dbaug9 chord?

How do I build Dbaug9 on the keyboard?

Which keys is Dbaug9 found in?

What can I substitute for Dbaug9?