Db7b5

Db 7b5

Octaves

Musical context

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

Theory

General info

Full name
Db 7b5
Symbol
Db7b5
Root
Db
Quality
7b5

Chord notes

1Dbroot
3Fmajor 3rd
b5Gdim 5th
b7Cbminor 7th

Functions & resolutions

Typical function in key
IVSubdominant (IV)Ab major
Stability / tension
High tension — requires resolution
Most common resolutions
Unstable degrees
3F
4Gb
resolves up to the resolution tonic
4Gb
b5G
resolves inward to the resolution tonic
6Bb
b7B
resolves down to the tonic 3rd
Main resolution
Db7b5source
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
Db7b5source
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.
Db7b5source
Modal resolution
BB Major
In rock and blues, the dominant often moves to bVII or IV instead of the tonic, creating a modal flavor.
Db7b5source
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.
Db7b5source
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

Features

Character
Dominant, with a diminished 5th
Characteristic interval
Diminished 5th (b5), Minor 7th (b7)
Description
The diminished fifth replaces the perfect fifth, adding a tritone to the dominant tension. Sharper than a regular dom7.
Application
  • Tritone substitution
  • Jazz ii-V-I
  • Altered blues

Voicing & structure

Root position

v1Db(Db4)Bass
root
v2F(F4)M3from Db
v3G(G4)M2from F
v4Cb(Cb4)M3from G

Harmony

Compatible scales

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

This chord on guitar 🎸

See how Db7b5 looks on guitar.

Explore

Circle of fifths

Highlighted major keys contain this chord among their diatonic harmonies.

CAmGEmDBmAF#mEC#mBG#mF#D#mDbBbmAbFmEbCmBbGmFDmDbmajor
Relative key
Dominant
Subdominant
Key signature
5 flats (Bb, Eb, Ab, Db, Gb)

Practice

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Frequently Asked Questions