G#+(#11) Guitar Chord Diagrams | G# Augmented Fifth Sharp Eleventh added
The G# augmented sharp eleven chord is usually written G#+(#11) and uses the notes G#, B#, D## and C##. The raised fifth and the sharp eleventh, D## and C##, are only a whole step apart, which gives the chord its bite.
Its enharmonic twin is Ab+(#11), which sounds exactly the same. The notes B#, D## and C## are theoretical spellings, which is why charts tend to write Ab+(#11) instead. A scale that covers every chord tone is the G# Lydian augmented scale, which is where to start when you improvise.
The augmented triad underneath is symmetrical, so its three notes divide the octave into three equal parts.
G# augmented with sharp 11th guitar chord is also written as G#+(#11), G#aug(#11), G#+#11 or G#aug#11.
G# +(#11) chord Notes:
Tones of the Augmented Fifth Sharp Eleventh added chord:
Formula: 1 3 #5 #11
G# +(#11) Chord Interactive Fretboard
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Created by
Giancarlo is a musician (teaching guitar since 2000), software engineer, AI consultant and published researcher
FAQ
What are the notes of G#+(#11)?
G#+(#11) is spelled G#, B#, D## and C##. They are the root, major third, raised fifth and sharp eleventh. All three upper notes are theoretical spellings.
Is G#+(#11) the same chord as Ab+(#11)?
Yes. Ab+(#11) uses Ab, C, E and D, the same pitches with simpler letters. The G# version is the theoretical spelling.
Why does G# augmented sharp eleven include C##?
The perfect fourth of G# is C#. Raising it a semitone for the sharp eleventh gives C##, which sounds like D. The C letter marks it as the eleventh.
Which scale covers G#+(#11)?
The G# Whole-Tone Scale (G#, A#, B#, C##, D##, F#) contains all four notes of the chord. Nothing in the chord falls outside it.
