G#7(b13) Guitar Chord | How to Play The G# Dominant Seventh Flat Thirteen Added Chord
The G#7(b13) chord, also read as G# seventh flat thirteen, is spelled G#, B#, D#, F# and E: a root, a major third, a perfect fifth, a minor seventh and a flat thirteenth.
From the root G#, the notes sit at the intervals 1, 3, 5, b7, b13, a pattern that repeats on every root. A chart may write it as Ab7(b13) instead, and nothing changes under your fingers. For melodies, reach for the G# Mixolydian b6 scale: it is the fifth mode of the melodic minor scale, and it holds all five chord tones.
Leave out the flat thirteenth E and what remains is the dominant seventh G#7 (G#, B#, D#, F#).
G# 7th with flat 13th guitar chord is also written as G#7(b13), G#7b13 or G#7-13.
Notes of the G# 7(b13) chord:
Tones of the Dominant Seventh Flat Thirteen Added chord:
Formula: 1 3 5 #5 b7
G# 7(B13) Chord Interactive Fretboard
Want a structured chord roadmap instead of jumping between pages?
Go to the full guitar chords tutorial.
Download
the Free Guitar Chords Chart Pdf
Created by
Giancarlo is a musician (teaching guitar since 2000), software engineer, AI consultant and published researcher
FAQ
Which notes form the G# seventh flat thirteen chord?
G#, B#, D#, F# and E. The B# is the major third and sounds like C. The E is the flat thirteenth, a minor sixth from the root one octave up.
Is G#7(b13) another name for Ab7(b13)?
Yes, the two share the same pitches. Ab7(b13) is spelled Ab, C, Eb, Gb and Fb, while G#7(b13) uses G#, B#, D#, F# and E. The sound is identical.
Why is there a B# in G#7(b13)?
Chord letters stack as G, B, D, F and, for the thirteenth, E. The major third higher than G# is B#, which sounds like C. Writing C would turn it into a diminished fourth.
What scale works over G#7(b13)?
The G# Mixolydian b6 scale: G#, A#, B#, C#, D#, E and F#. It contains all five chord tones and is the fifth mode of the melodic minor scale.
What is the E in G#7(b13)?
It is the flat thirteenth, the thirteenth degree lowered by a half step. It lies a half step higher than the perfect fifth, D#.
