Gbm(maj7) Guitar Chord Chart and Fingering
Gb, Bbb, Db and F spell the Gbm(maj7) chord (Gb minor major seventh). It sounds identical to F#m(maj7), which writes the minor third as a plain A instead of a double flat.
The F is the major seventh, a half step below Gb. The Bbb is correct theory, and in the sharp spelling it becomes the plain A. The Gb melodic minor scale contains all four notes. Compared with Gbm7, the seventh is one fret higher. Both names describe the same pitches, so only the spelling differs. The chord is the root, minor third, fifth and major seventh.
Gb minor major 7th guitar chord is also written as Gbm(maj7), GbmM7, Gbminmaj7 or Gb-Δ7.
Notes of the Gb m(maj7) chord:
How to create the Minor Major Seventh chord:
Formula: 1 b3 5 7
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Giancarlo is a musician (teaching guitar since 2000), software engineer, AI consultant and published researcher
FAQ
What are the notes of Gbm(maj7)?
Gbm(maj7) is Gb, Bbb, Db and F. Bbb sounds like A, and the natural F is the major seventh.
Why does Gbm(maj7) contain a double flat?
The third of a G chord takes the letter B, and a minor third up from Gb is B lowered twice, written Bbb. It sounds like A, but A would break the letter order G, B, D, F.
Is F#m(maj7) the same chord as Gbm(maj7)?
Yes, F#m(maj7) is the same chord, spelled F#, A, C# and E#. It avoids the double flat and is the easier one to read.
Which scale fits Gb minor major seventh?
Gb melodic minor: Gb, Ab, Bbb, Cb, Db, Eb, F. The chord uses its first, third, fifth and seventh notes.
Why is the seventh of Gbm(maj7) a natural F?
A major seventh is eleven semitones up from the root, and from Gb that is F natural. Fb would be the minor seventh of a different chord.
