Dbdim7

Q: What notes are in the Dbdim7 chord?

The Dbdim7 chord (Db Diminished 7th) contains: Db, Fb, G, Bb. Its interval structure is shown above in the Theory section.

Q: How do I build Dbdim7 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 Dbdim7 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 Dbdim7?

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 Diminished 7th

Octaves

Musical context

ChordDbdimTriad

ChordDbdim7Db Diminished 7th

ArpeggioDb minorBroken triad

ScaleDb minor7 notes

KeyDb minorMinor key

ProgressionAndalusianSequence

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

Theory

General info

Full name: Db Diminished 7th
Symbol: Dbdim7
Root: Db
Quality: Diminished 7th

Chord notes

1Dbroot

b3Fbminor 3rd

b5Gdim 5th

bb7Bbdim 7th

Functions & resolutions

Typical function in key: IVSubdominant (IV)Ab major
Stability / tension: Maximum tension — extremely unstable
Most common resolutions: DD Major FF Major
Unstable degrees: 2Eb
b3E
resolves down to the 2nd
4Gb
b5G
resolves inward to the 4th
b6A
bb7Bb
resolves down to the tonic 5th
Main resolution: Dbdim7source
DD Major
Diminished Dbdim acts as a leading-tone chord — resolves up a half step to D. All tones are unstable, moving by semitones inward and outward to stable degrees.
Other resolutions: Dbdim7source
Deceptive resolution
FF Major
Due to its symmetry, a diminished 7th chord can resolve to any major or minor chord a minor 3rd apart.
Dbdim7source
Modal resolution
EbmEb Minor
In modal context, a diminished chord can be used as a passing chord, connecting two diatonic chords through chromatic bass motion.
Dbdim7source
Jazz reharmonization
C7C Dominant 7
In jazz, dim7 is often reinterpreted as a rootless dominant 7b9. For example, Dbdim7 ≈ C7b9, opening additional resolution paths.
Dbdim7source
Functional resolution
AbmAb Minor
A diminished chord can function as a leading-tone chord to any degree — not just the tonic. Often used before the ii, iii, or vi degrees.

Features

Character: Fully diminished, symmetric and unstable
Characteristic interval: Diminished 7th (°7)
Description: Four tones are stacked in minor 3rds; the diminished 5th and 7th create two tritones. Symmetry allows any tone to be enharmonically reinterpreted as the root.
Application: Leading-tone seventh in minor
Secondary leading-tone chords
Chromatic voice leading

Voicing & structure

Root position

v1Db(Db4)Bass

root

v2Fb(Fb4)m3from Db

v3G(G4)m3from Fb

v4Bb(Bb4)m3from G

Harmony

Compatible scales

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

ScaleC# Romanian minor ScaleC# Ukrainian Dorian ScaleE Romanian minor ScaleE Ukrainian Dorian ScaleG Romanian minor ScaleG Ukrainian Dorian ScaleA# Romanian minor ScaleA# Ukrainian Dorian ScaleC Phrygian dominant ScaleD Harmonic minor

This chord on guitar 🎸

See how Dbdim7 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 ChordDb DiminishedA nearby chord on the same root — compare the sound PracticeChord trainerLock the fingering into muscle memory ProgressionChord progressionsHow this chord works inside real progressions ChordDb Half-dim 7Another related chord to practise

Recommended for you

Db DiminishedA chord that sounds close

Db Half-dim 7A chord that sounds close

C# Chromatic scaleA scale related to this chord

C# Diminished 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 Dbdim7 chord?

How do I build Dbdim7 on the keyboard?

Which keys is Dbdim7 found in?

What can I substitute for Dbdim7?