Db7#9

Q: What notes are in the Db7#9 chord?

The Db7#9 chord (Db 7#9) contains: Db, F, Ab, Cb, E. Its interval structure is shown above in the Theory section.

Q: How do I build Db7#9 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 Db7#9 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 Db7#9?

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 7#9

Octaves

Musical context

ChordDb majorTriad

ChordDb7#9Db 7#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 7#9
Symbol: Db7#9
Root: Db
Quality: 7#9

Chord notes

1Dbroot

3Fmajor 3rd

5Abperfect 5th

b7Cbminor 7th

#2Eaug 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
6Bb
b7B
resolves down to the tonic 3rd
#2E
4Gb
resolves to the resolution tonic
Main resolution: Db7#9source
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: Db7#9source
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.
Db7#9source
Modal resolution
BB Major
In rock and blues, the dominant often moves to bVII or IV instead of the tonic, creating a modal flavor.
Db7#9source
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.
Db7#9source
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 an augmented 9th
Characteristic interval: Minor 7th (b7), Augmented 9th (#9)
Description: The augmented 9th is enharmonically equivalent to a minor 3rd and sounds alongside the chord’s major 3rd. Their chromatic clash creates sharp tension characteristic of blues and rock.
Application: Blues rock (Jimi Hendrix "Purple Haze")
Funk
Jazz fusion

Voicing & structure

Root position

v1Db(Db4)Bass

root

v2F(F4)M3from Db

v3Ab(Ab4)m3from F

v4Cb(Cb4)m3from Ab

v5E(E5)P4from Cb

Harmony

Compatible scales

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

ScaleF Hungarian minor ScaleC Double harmonic ScaleC Persian scale ScaleC Byzantine ScaleA Harmonic major ScaleC# Diminished (half–whole)ScaleC# Bebop minor ScaleE Diminished (half–whole)ScaleF Diminished scale ScaleG# Diminished scale

This chord on guitar 🎸

See how Db7#9 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 Db7#9 chord?

How do I build Db7#9 on the keyboard?

Which keys is Db7#9 found in?

What can I substitute for Db7#9?