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 | white | thumb (1) | little finger (5) |
| B♭ | black | index finger (2) | middle finger (3) |
| D♭ | black | middle finger (3) | index finger (2) |
| F♯ | black | little finger (5) | thumb (1) |
Right hand: thumb (1) on G, index finger (2) on B♭, middle finger (3) on D♭, little finger (5) on F♯.
Left hand: little finger (5) on G, middle finger (3) on B♭, index finger (2) on D♭, thumb (1) 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.