Construction
G♭ Diminished Major 7th = Root + Minor 3rd + Diminished 5th + Major 7th = G♭, B♭♭, D♭♭, F
| Note | Interval | Degree |
|---|---|---|
| G♭ | Root | 1 |
| B♭♭ | Minor 3rd | ♭3 |
| D♭♭ | Diminished 5th | ♭5 |
| F | Major 7th | 7 |
Fingering
| Note | Key color | Right hand | Left hand |
|---|---|---|---|
| G♭ | black | index finger (2) | little finger (5) |
| B♭♭ | white | middle finger (3) | ring finger (4) |
| D♭♭ | white | ring finger (4) | middle finger (3) |
| F | white | little finger (5) | index finger (2) |
Right hand: index finger (2) on G♭, middle finger (3) on B♭♭, ring finger (4) on D♭♭, little finger (5) on F.
Left hand: little finger (5) on G♭, ring finger (4) on B♭♭, middle finger (3) on D♭♭, index finger (2) on F.
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 G♭ Major
These are the triads built on each degree of G♭ Major:
G♭ Diminished Major 7th : Frequently Asked Questions
What is the G♭ Diminished Major 7th chord on piano?
The G♭ Diminished Major 7th chord contains the notes G♭ – B♭♭ – D♭♭ – F. On piano, play these notes together to sound the chord.