♪♫♩♬♪♫

G#/Ab Diminished Scale (Whole-Half) for Guitar

Notes: G# A# B C# D E F G · interactive fretboard

G# Diminished (Whole-Half)

Symmetric scale alternating whole and half steps, used over diminished chords

EBGDAE123456789101112131415FGG#A#BC#DEFGC#DEFGG#A#BC#DG#A#BC#DEFGG#A#EFGG#A#BC#DEFA#BC#DEFGG#A#BFGG#A#BC#DEFG
Root (G#)
Blue Note (♭5)
Scale Notes
Click empty = outside note
Notes:
G#A#BC#DEFG

About the G#/Ab Diminished Scale (Whole-Half)

The G#/Ab diminished scale is a 8-note scale. Symmetric scale alternating whole and half steps, used over diminished chords. Its notes are G#, A#, B, C#, D, E, F and G, built from the formula 1 2 ♭3 4 ♭5 ♭6 6 7.

Notes
G# – A# – B – C# – D – E – F – G
Formula
1 2 ♭3 4 ♭5 ♭6 6 7
Steps
W H W H W H W H (2–1–2–1–2–1–2–1 semitones)
Root
G#/Ab

G#/Ab Diminished Scale (Whole-Half) degrees and intervals

DegreeNoteInterval
1G#Root
2A#Major 2nd
♭3BMinor 3rd
4C#Perfect 4th
♭5DTritone (♭5)
♭6EMinor 6th
6FMajor 6th
7GMajor 7th

Where to play the G#/Ab Diminished Scale (Whole-Half) on guitar

Frets 0–12 in standard tuning (E A D G B E), lowest string first. Root notes (G#) are highlighted; the pattern repeats from the 12th fret up.

StringFrets
E20, 1, 3, 4, 6, 7, 9, 10, 12
A21, 2, 4, 5, 7, 8, 10, 11
D30, 2, 3, 5, 6, 8, 9, 11, 12
G30, 1, 3, 4, 6, 7, 9, 10, 12
B30, 2, 3, 5, 6, 8, 9, 11, 12
E40, 1, 3, 4, 6, 7, 9, 10, 12

How to practice the diminished scale

  • Learn the repeating 2-fret pattern
  • Use over dim7 chords and passing diminished
  • Practice diminished 7th arpeggios within scale
  • Work on bebop-style enclosures
  • Transpose in minor 3rds to see symmetry

Scales with the same notes as G#/Ab Diminished Scale (Whole-Half)

These scales share every note with the G#/Ab diminished scale but start from a different root, so the same shapes work over different chords.

Diminished scale in other keys

Other scales in G#/Ab

G#/Ab Diminished Scale (Whole-Half) on other instruments