Construction
D♭ Diminished Major 7th = Root + Minor 3rd + Diminished 5th + Major 7th = D♭, F♭, A♭♭, C
| Note | Interval | Degree |
|---|---|---|
| D♭ | Root | 1 |
| F♭ | Minor 3rd | ♭3 |
| A♭♭ | Diminished 5th | ♭5 |
| C | Major 7th | 7 |
Fingering
| Note | Key color | Right hand | Left hand |
|---|---|---|---|
| D♭ | black | index finger (2) | little finger (5) |
| F♭ | white | middle finger (3) | ring finger (4) |
| A♭♭ | white | ring finger (4) | middle finger (3) |
| C | white | little finger (5) | index finger (2) |
Right hand: index finger (2) on D♭, middle finger (3) on F♭, ring finger (4) on A♭♭, little finger (5) on C.
Left hand: little finger (5) on D♭, ring finger (4) on F♭, middle finger (3) on A♭♭, index finger (2) on C.
Key Signature
A Diminished Major 7th chord is built from symmetrical or ambiguous intervals, so it doesn't belong to a single key and has no key signature of its own.
Chords in the Key of D♭ Major
These are the triads built on each degree of D♭ Major:
D♭ Diminished Major 7th : Frequently Asked Questions
What is the D♭ Diminished Major 7th chord on piano?
The D♭ Diminished Major 7th chord contains the notes D♭ – F♭ – A♭♭ – C. On piano, play these notes together to sound the chord.