What notes are in a G♯ major chord?

G♯ major contains three notes: G♯ (the root), B♯ (the major third — same pitch as C), and D♯ (the perfect fifth).

Is G♯ major the same as A♭ major?

Yes, enharmonically. G♯ major would have eight sharps (including F𝄪) so it's never used as a key. A♭ major (four flats) is the practical spelling for this chord.

When would I see G♯ major in a score?

Almost always as the dominant (V) chord of C♯ minor — the standard key for C♯ minor literature uses G♯ major in cadences. Outside that context, A♭ major is the spelling.

Why is the third B♯ instead of C?

In a sharp-key context, scale spellings use each letter once. The G♯ scale runs G♯-A♯-B♯-C♯-D♯-E♯-F𝄪 — so the third is the "B" letter raised by a sharp, written B♯.

G# major chord — notes, intervals, and practice

G♯ major is a theoretical key — its key signature would require eight sharps (including F𝄪, a double-sharp), so it's essentially never written in published music. The chord G♯–B♯–D♯ does appear, but always inside a piece notated in a different key (typically C♯ minor or D♯ minor, where G♯ functions as a dominant). For the actual chord with these pitches, use the enharmonic A♭ major spelling.

Intervals

The G# major chord stacks two thirds on the root. Each interval and its size in semitones:

G#→B#major 3rd4 semitones
B#→D#minor 3rd3 semitones
G#→D#perfect 5th7 semitones

On the keyboard

Each note of the G# major chord highlighted on a piano. Pitch class is what matters — any octave works.

On the guitar

One voicing of the G# major chord on a six-string guitar fretboard.

Common mistakes

The third is B♯, which is enharmonic to C natural. Beginners almost universally read it as C — and they're hearing the right pitch — but the proper spelling inside a sharp-key context is B♯. The chord almost always appears as the V chord of C♯ minor, where it spells correctly as G♯-B♯-D♯ to maintain the seven-letter rule.

In context

G♯ major is most often encountered as the V chord of C♯ minor, where the cadence G♯ → C♯m is the strongest harmonic motion in the key. It also appears as the V/V (secondary dominant) in F♯ major, resolving to C♯ major. As a standalone tonic, G♯ major isn't used in published literature; A♭ major covers the same harmonic territory with a much friendlier key signature.

Drill it

The G# major chord is one of 48 in the Chord Trainer. Open the full trainer to practice it alongside related chords with timing and best-time tracking.

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Frequently asked

What notes are in a G♯ major chord?: G♯ major contains three notes: G♯ (the root), B♯ (the major third — same pitch as C), and D♯ (the perfect fifth).
Is G♯ major the same as A♭ major?: Yes, enharmonically. G♯ major would have eight sharps (including F𝄪) so it's never used as a key. A♭ major (four flats) is the practical spelling for this chord.
When would I see G♯ major in a score?: Almost always as the dominant (V) chord of C♯ minor — the standard key for C♯ minor literature uses G♯ major in cadences. Outside that context, A♭ major is the spelling.
Why is the third B♯ instead of C?: In a sharp-key context, scale spellings use each letter once. The G♯ scale runs G♯-A♯-B♯-C♯-D♯-E♯-F𝄪 — so the third is the "B" letter raised by a sharp, written B♯.