G Locrian Piano Scale
Piano scale diagram
G Locrian Scale — Notes and Intervals
The G Locrian scale is the seventh and most unstable mode of the major scale. On Piano, the notes are G, Ab, Bb, C, Db, Eb, F. It sounds highly dissonant and unresolved, as its home chord is a diminished triad. While rare as a primary key, it is a crucial technical tool for jazz musicians improvising over half-diminished chords in tension-heavy passages. The diatonic chords of G Locrian are Gm7b5, AbMaj7, Bbm7, Cm7, DbMaj7, Eb7, Fm7. Commonly used in Jazz, Metal, Experimental, Avant-Garde. Notable players include John Coltrane, Meshuggah, Dream Theater. Use over m7b5 (half-diminished) chords. Essential for jazz ii-V-i in minor keys where the ii chord is half-diminished.
Notes: G, Ab, Bb, C, Db, Eb, F
Intervals: 1P, 2m, 3m, 4P, 5d, 6m, 7m
Degrees: 1 b2 b3 4 5 b6 b7
Formula: H-W-W-H-W-W-W
Number of notes: 7
Diatonic Chords
Gm7♭5 — A♭Maj7 — B♭m7 — Cm7 — D♭Maj7 — E♭7 — Fm7
How to Play G Locrian on Piano
On piano, the G Locrian scale uses 4 black keys. With several black keys involved, let the thumb naturally fall on white keys where possible. Practice hands separately at first, paying attention to smooth thumb-under transitions.
The G Locrian scale contains 4 flats (Ab, Bb, Db, Eb). Its relative major is Bb major, which shares the same key signature.
Practice Routine
Practice the G Locrian scale by playing it ascending with one rhythmic feel (straight eighth notes) and descending with another (swing or triplets) at 80 BPM. This dual approach trains both technical accuracy and rhythmic versatility with the 7 notes of the scale.
Try these progressions with the G Locrian scale: Gm7b5 - Cm7 - DbMaj7 - Gm7b5 (I-IV-V-I) or Gm7b5 - AbMaj7 - Cm7 - DbMaj7 for a more stepwise movement.
Piano Tips
At the piano, try voicing the G Locrian scale in the left hand as blocked intervals (thirds or sixths) while the right hand plays the melody. This develops your harmonic ear and comping skills simultaneously.
The G Locrian scale contains 7 notes (G, Ab, Bb, C, Db, Eb, F). Use the interactive piano diagram above to explore this scale on Piano.