G♯13 — G♯, B♯, D♯, F♯, A♯, E♯ — is a dominant 13th chord: dominant 7 + 9 + 13. The 13 is a major 6th above the root, an octave up; the chord is the standard big-V chord in jazz cadences.
Intervals
The G# dominant 13 chord stacks two thirds on the root. Each interval and its size in semitones:
- G#→B#major 3rd4 semitones
- B#→D#minor 3rd3 semitones
- D#→F#minor 3rd3 semitones
- F#→A#major 3rd4 semitones
- A#→E#perfect 5th7 semitones
On the keyboard
Each note of the G# dominant 13 chord highlighted on a piano. Pitch class is what matters — any octave works.
On the guitar
One voicing of the G# dominant 13 chord on a six-string guitar fretboard.
- 1G#
- 3B#
- 5D#
- ♭7F#
- 9A#
- 13E#
Common mistakes
The defining note is the 13th (E♯). It sits more than an octave above the root, which is why the chord needs a wide voicing — in tight piano voicings the 13th usually appears in the top register while the root and lower triad tones cluster below.
In context
Functions as the fully-extended V13 — the standard big-dominant in jazz cadences.
Drill it
The G# dominant 13 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♯13 chord?
- G♯13 contains six notes: G♯, B♯, D♯, F♯, A♯, E♯.
- How is G♯13 different from G♯7?
- G♯13 adds the 13th (E♯) on top of the underlying 7th chord. The 13th extends the chord into the next octave and adds harmonic colour.
- When is G♯13 used in music?
- Functions as the fully-extended V13 — the standard big-dominant in jazz cadences.