D♭ Diminished 7th
Also Known As
Hear the D♭ Diminished 7th chord played for you.
D♭°7
D♭ – E – G – B♭
Formula:R-m3-d5-d7
Intervals:P1-m3-d5-d7
Scale Degrees:1-b3-b5-bb7
Introduction
The D♭ Diminished 7th chord is a four-note chord made up of D♭, E, G, and B♭. It is built from a root, minor third, diminished fifth, and diminished seventh.
The Db Diminished 7th piano chord (Dbdim7) consists of the notes Db, E, G, Bb. It is built by stacking three minor thirds, creating a fully symmetrical 4-note chord, giving it a extremely tense and dramatic character, fully symmetrical and harmonically versatile. Formula: R-m3-d5-d7 | Scale degrees: 1-b3-b5-bb7.
Notes
D♭ Diminished 7th Inversions
| Position | Notes |
|---|---|
| Root Position | Db4 – E4 – G4 – Bb4 |
| 1st Inversion | E4 – G4 – Bb4 – Db5 |
| 2nd Inversion | G4 – Bb4 – Db5 – E5 |
| 3rd Inversion | Db4 – E4 – G4 – Bb3 |
Key Signature
The key of Db Diminished 7th has 5 flats.
B♭E♭A♭D♭G♭
Order of flats
Flats are added in a fixed order — the reverse of the sharp order. Each new flat key adds the next flat on the list.
B♭E♭A♭D♭G♭C♭F♭
Mnemonic: Battle Ends And Down Goes Charles’ Father
Chords in the Key of Db Major
These are the diatonic triads built on each degree of the Db major scale:
C
D
E
F
G
A
B
C
D
E
F
G
A
B
I — D♭ Major (major)
Theory: Intervals
Formula: R-m3-d5-d7
Intervals: P1-m3-d5-d7
The D♭ Diminished 7th is built by stacking intervals from the root note. The formula R-m3-d5-d7 describes the scale degrees used. The intervals P1-m3-d5-d7 show the distance between each note in the chord.
D♭ Diminished 7th — Frequently Asked Questions
What notes are in the Db Diminished 7th chord?
The Db Diminished 7th chord (Dbdim7) contains four notes: Db (root), Fb (minor third), Abb (diminished fifth), and Cbb (diminished seventh). Enharmonically: Db, E, G, Bb. All four notes are spaced exactly 3 semitones apart.
How does Db Diminished 7th differ from Db Diminished?
Db Diminished is a three-note triad (Db, Fb, Abb). Db Diminished 7th adds a fourth note — Cbb (diminished seventh). This completes the symmetrical structure and increases the harmonic tension.
Why is the Diminished 7th chord symmetrical?
Every note in Dbdim7 is exactly 3 semitones from the next. This means Dbdim7 = Edim7 = Gdim7 = Bbdim7 — all the same four notes rearranged. Only three unique diminished 7th chords exist in total.
How is Db Diminished 7th used in music?
Dbdim7 commonly functions as a passing chord or leading-tone chord. As the vii°7 of D, it resolves beautifully up by half step to D Major or D minor. It also works as a chromatic approach chord to any of its enharmonic roots.
What songs use Diminished 7th chords?
Diminished 7th chords appear in Michelle (Beatles), throughout Chopin and Beethoven for dramatic tension, and in jazz standards for chromatic passing movement. Silent film scores used dim7 extensively for suspense.
How many unique Diminished 7th chords exist?
Only three. Dbdim7 is the same chord as Edim7, Gdim7, and Bbdim7 — just different inversions. All 12 roots map to just three distinct sounds because of the perfect 3-semitone symmetry.
Practice Tips
- Play Dbdim7 and notice it sounds identical to Edim7, Gdim7, and Bbdim7 — all the same notes rearranged.
- Use Dbdim7 as a leading-tone chord: Dbdim7 → D Major resolves powerfully upward by half step.
- Practice Dbdim7 as a passing chord: C Major → Dbdim7 → Dm7 for smooth chromatic voice leading.
- The enharmonic spellings (Db–Fb–Abb–Cbb vs Db–E–G–Bb) look different but sound identical — knowing both builds theory depth.
- Try the dramatic effect: sustain Dbdim7 with pedal, then resolve to D Major — this tension-release is a classical composing technique.
- Since only 3 unique dim7 chords exist, knowing Cdim7, Dbdim7 (C#dim7), and Ddim7 covers every possible diminished 7th.
Related Tools
Chord FinderLook up any chord — see the notes, hear it, and play along.Chord DrillTimed drills to build speed and recognition across all chord types.Practice RoomPlug in a MIDI keyboard and get real-time feedback on every chord and scale.Circle of FifthsVisualize key relationships, relative minors, and key signatures.MIDI MonitorLive MIDI message stream with note names, velocity, and a scrolling staff.