G Diminished Major 7th

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The G Diminished Major 7th chord contains the notes G, B♭, D♭, and F♯.

Notes: G, B♭, D♭, F♯ · Piano keys: G B♭ D♭ F♯

Reviewed for accuracy · Last updated July 2026 · Maintained by Justin Evans

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G – B♭ – D♭ – F♯

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Introduction

The G Diminished Major 7th chord is a four-note chord made up of G, B♭, D♭, and F♯.

Notes

Notes:G – B♭ – D♭ – 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.