Guitar Theory Studio
Scale

G# Blues Scale

The G# blues scale (also written Ab) — G# B C# D D# F# — with its intervals, the chords it makes and every position on the guitar neck.

Also written Ab blues. Ab and G# are the same pitch — G# is the spelling in common use.

G# Blues Scale on the guitar fretboard13578910121415eBGDAEF#G#BC#DD#F#BC#DD#F#G#BC#DG#BC#DD#F#G#DD#F#G#BC#DD#BC#DD#F#G#BF#G#BC#DD#F#

Tap any note on the neck.

Swipe the neck sideways to see the higher frets.

Notes
G#   B   C#   D   D#   F#
Intervals
1   b3   4   b5   5   b7
Step pattern
W+H – W – H – H – W+H – W
Open this in the fretboard tool →

G# blues is G# minor pentatonic with the b5 added — D.

G# blues scale notes and intervals

G# blues has 6 notes. Each is named by its distance from the root, which is the same in every key — learn the numbers once and every blues scale reads the same.

G#
1
root
B
b3
minor 3rd
C#
4
perfect 4th
D
b5
diminished 5th
D#
5
perfect 5th
F#
b7
minor 7th

Step pattern from the root: W+H – W – H – H – W+H – W (W is a whole step, two frets; H is a half step, one fret; W+H is three frets).

Scales it shares notes with:

G# blues scale positions on guitar — all 5

G# blues is played in five box shapes that tile the neck between frets 1 and 15. Each box shares frets with the next, so you change shape without stopping. Position 5 sits lowest.

Position 1 — frets 4–7

G# blues scale, position 1, frets 4–7345678G#BC#DD#F#G#BC#DD#F#G#B

Position 2 — frets 6–10

G# blues scale, position 2, frets 6–10567891011BC#DD#F#G#BC#DD#F#G#BC#

Position 3 — frets 8–12

G# blues scale, position 3, frets 8–1278910111213C#DD#F#G#BC#DD#F#G#BC#DD#

Position 4 — frets 11–15

G# blues scale, position 4, frets 11–1510111213141516D#F#G#BC#DD#F#G#BC#DD#F#

Position 5 — frets 1–5

G# blues scale, position 5, frets 1–50123456F#G#BC#DD#F#G#BC#DD#F#G#

Each box on its own page, with how it joins its neighbours →

Chords to play G# blues over

G# blues is the minor scale with the 2 and the b6 left out and a b5 added — the notes most likely to clash — so it works across the chords of G# minor and over the dominant seventh chords of a blues in G#. It is not an equally good fit on every one of them: over each chord, aim for that chord’s own notes and let the rest pass.

G#m
G#m chord shape1frG#BD#G#D#G#
i
A#dim
A#dim chord shape5frA#EA#C#EA#
ii°
B
B chord shape4frBD#F#BD#B
III
C#m
C#m chord shape6frC#EG#C#G#C#
iv
D#m
D#m chord shape8frD#F#A#D#A#D#
v
E
E chord shapeEBEBEG#
VI
F#
F# chord shape1frF#A#F#A#C#F#
VII

All the chords in G# minor, with shapes and numerals →

How to practice the G# blues scale

  1. Start with position 5 at frets 1–5, slowly, until every note lands on the click. The loop keeps the shape and the tempo for you.
  2. Add five beats a minute each time it feels easy. When straight runs get dull, play the same position in thirds — the pattern that turns a scale into lines.
  3. See every G# blues note across the whole neck on the Fretboard, and find each box again an octave up.

Put this fretboard on your own page

Teachers and bloggers: paste this and your readers get the diagram above, playable, on your page. Free to use, and the credit line links back here.