G# Dominant Eleventh Flat Nine

Symbols:G#11b9
Scale Degree Formula:1-3-5-♭7-♭9-11
Interval Stack:M3 + m3 + m3 + m3 + M3
Notes:G#, C, D#, F#, A, C#
Hear this chord:▸ Synth

Construction

Using the scale degree formula, we first start with the G# major scale, and number each note in the scale starting from 1 - these are the scale degrees. Next, we use the scale degree formula, in this case 1-3-5-♭7-♭9-11, to select notes from our enumerated scale. When a chord requires notes that are not in the scale, this is indicated with a flat (♭) or a sharp (#) along with the scale degree; a ♭3, for instance, would be one half-step down from the 3rd scale degree.
Alternatively, we can use the interval stack to construct our chord. With this approach, we first start with the root of the chord (G#), then move our first interval (M3), which brings us to our second note in the chord (C). We repeatedly apply each of the remaining intervals in the stack to get the full list of notes for our chord.
The diagram below shows how both the scale degree formula and interval stack methods result in the same selection of notes:
G#1A♭2Bb2B♭3C3C#4D♭5D#5E#5F6F#♭7G7G#8A♭9Bb9B♭10C10C#11M3m3m3m3M3

Similar Chords

The following chords are similar to this chord and may be a suitable replacement in certain scenarios.

Chord TypeChords
7th Suspended Four Flat 9thG#7sus4b9
Dominant 7th Flat 9thG#7b9
Dominant 7th Flat Nine Flat ThirteenthG#7b9b13, F7b9b13
Dominant EleventhG#11
Major EleventhC#M11
Minor Eleventh Flat NineG#m11b9
Minor Six-NineF#m6/9

Associated Scales

This chord can be found in the following scales.

ScaleRoots
Dorian b5D#
Harmonic MajorC#
Harmonic MinorC#
Ionian #5E
Locrian bb7C
Locrian ♮6D#
Lydian #9A
Lydian Augmented #2A
Lydian b3F#
Mixolydian b2G#
Phrygian DominantG#
Phrygian b4F
Super-Locrian bb7C
Ukrainian DorianF#

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