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The Gb Major scale is a major scale which means it has the following definition:
R 2 3 4 5 6 7
The notes in the Gb Major scale are:
Gb Ab Bb Cb Db Eb F Gb
There are 7 notes in the scale with 6 flats and no sharps.
The scale definition for the Gb Major guitar scale is R 2 3 4 5 6 7 which means that the interval formula for the scale in semitones is:
2 2 1 2 2 2 1
You can also write this as note intervals:
Tone Tone Semitone Tone Tone Tone Semitone
Let's take a look at Gb Major on the guitar fretboard. Here is the scale across the entire fretboard:
Here is a quick recap of all the information about the Gb Major covered in this page:
The Gb Major Scale is a major scale.
The definition of the Gb Major scale is: R 2 3 4 5 6 7
The notes in the Gb Major guitar scale are: Gb Ab Bb Cb Db Eb F Gb
The interval formula for the Gb Major scale is: 2 2 1 2 2 2 1
The note intervals in the Gb Major scale are: Tone Tone Semitone Tone Tone Tone Semitone