Guitar Chord Dictionary: Gb Minor Sixth Ninth Chords
The Gbm6/9 chord (Gb minor six nine) is spelled Gb, Bbb, Db, Eb and Ab. It sounds identical to F#m6/9, which writes the minor third as a plain A.
The double flat in Bbb is the sticking point: it is the same pitch as A, and the notation looks heavy. The remaining notes are Db for the fifth, Eb for the major sixth and Ab for the major ninth. All five are inside the Gb Dorian scale, a minor mode with a major sixth, which is the colour the chord is named for.
Gb minor 6/9 guitar chord is also written as Gbm6/9, Gbm69, Gbmin6/9 or Gb-6/9.
Gb m6/9 chord Notes:
Tones in the Minor Sixth Ninth chord:
Formula: 1 b3 5 6 9
Gb M6/9 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 notes does Gbm6/9 contain?
Gb, Bbb, Db, Eb and Ab. The Bbb is a double flat, the minor third of Gb, and Eb and Ab are the sixth and ninth.
Why does Gb minor six nine contain a double flat?
The minor third of Gb needs a B letter name, so it is Bbb, which sounds like A. Keeping the letter B preserves the stack of thirds.
Is F#m6/9 the same chord as Gbm6/9?
Yes, F#m6/9 is F#, A, C#, D# and G#, which sounds the same. It avoids the double flat, so it is simpler to read.
Which scale fits Gbm6/9?
The Gb Dorian scale: Gb, Ab, Bbb, Cb, Db, Eb and Fb. It contains all five chord notes.
