A Locrian Cuatro Venezolano Scale
Cuatro Venezolano scale — fretboard diagram
A Locrian Scale — Notes and Intervals
The A Locrian scale is the seventh and most unstable mode of the major scale. On Cuatro Venezolano, the notes are A, Bb, C, D, Eb, F, G. 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 A Locrian are Am7b5, BbMaj7, Cm7, Dm7, EbMaj7, F7, Gm7. 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: A, Bb, C, D, Eb, F, G
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
Am7♭5 — B♭Maj7 — Cm7 — Dm7 — E♭Maj7 — F7 — Gm7
How to Play A Locrian on Cuatro Venezolano
Begin by locating A on your instrument and play through the 7 notes of the Locrian scale slowly, ensuring each note rings clearly before increasing speed.
The A Locrian scale contains 2 flats (Bb, Eb). Its relative major is C major, which shares the same key signature.
Practice Routine
Set a metronome to 80 BPM and play the A Locrian scale in groups of four notes, shifting the starting note each repetition. This builds muscle memory across the entire scale range. After a week, try improvising short 4-bar phrases using only these notes.
Try these progressions with the A Locrian scale: Am7b5 - Dm7 - EbMaj7 - Am7b5 (I-IV-V-I) or Am7b5 - BbMaj7 - Dm7 - EbMaj7 for a more stepwise movement.
Cuatro Venezolano Tips
Practice the A Locrian scale slowly and evenly on your instrument, focusing on tone quality for each of the 7 notes before building speed.
The A Locrian scale contains 7 notes (A, Bb, C, D, Eb, F, G). Use the interactive fretboard above to explore this scale on Cuatro Venezolano with different tunings and fret ranges.
CAGED Positions & Patterns for A Locrian
The A Locrian scale can be played in 5 CAGED positions across the fretboard, each based on an open chord shape (C, A, G, E, D). As a 7-note scale, it also lends itself to 3-notes-per-string (3NPS) patterns that facilitate legato playing and diagonal shifting. Use the pattern selector above to isolate each position.