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

A♭ Diminished Major 7th

This is the same chord as A♭ Diminished Major 7th — the same keys on the keyboard, spelled with flats.

Open A♭ Diminished Major 7th What are enharmonics?

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G♯

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.