Modal Runs

G# Locrian (Ab Locrian) on Guitar

Locrian is the unstable one: both the 2nd and the 5th are flattened, so home itself is a diminished chord that never feels settled. The notes of G# Locrian are G#, A, B, C#, D, E, F#. Its characteristic note is D — the flat 5th — the one note that gives this diminished scale its colour.

With no perfect 5th to stand on, Locrian refuses to resolve — which is exactly why metal (Slayer, Meshuggah territory) and jazz players reaching for maximum tension keep it around. It is less a place to live than a place to pass through menacingly.

G# Locrian across the whole neck

1 2 3 4 5 6 7 8 9 10 11 12 E A D G B E E F# G# A B C# D E A B C# D E F# G# A D E F# G# A B C# D G# A B C# D E F# B C# D E F# G# A B E F# G# A B C# D E
Standard tuning, frets 0–12. The gold notes are the root (G#); every colour marks an interval, the same palette the app uses.
Practice G# Locrian over a drone →Free, in your browser. It listens through your mic and lights up what you play.

Over the drone, notice how even the root feels provisional — the flat 5th keeps kicking the floor out. Resolving anywhere else afterwards feels like surfacing.

Formula and intervals

R - b2 - b3 - 4 - b5 - b6 - b7 — 7 notes. The flat 3rd and flat 5th stack into a diminished triad on the root.

Chords in G# Locrian

These are the diatonic chords — the harmony built from only the notes above. Vamping between any of them keeps you inside the mode.

DegreeChordQuality
G#dimDiminished
IIAMajor
iiiBmMinor
ivC#mMinor
VDMajor
VIEMajor
viiF#mMinor

Same notes, different home

G# Locrian contains exactly the same notes as A Major. Nothing about the notes changes — what changes is which one feels like home, and that changes everything about the sound.

Other modes on G#

Keep the same root and swap the scale — the fastest way to hear what each mode actually does.

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