STRINGSCALES

G♭ messiaen's mode #4 Scale — Guitar Fretboard Visualization

Low E string: F, Gb, Abb, Ab, Cb, C, Db, Ebb at frets 1, 2, 3, 4, 7, 8, 9, 10

A string: Cb, C, Db, Ebb, F, Gb, Abb, Ab at frets 2, 3, 4, 5, 8, 9, 10, 11

D string: Ebb, F, Gb, Abb, Ab, Cb, C, Db, Ebb at frets 0, 3, 4, 5, 6, 9, 10, 11, 12

G string: Abb, Ab, Cb, C, Db, Ebb, F, Gb, Abb at frets 0, 1, 4, 5, 6, 7, 10, 11, 12

B string: Cb, C, Db, Ebb, F, Gb, Abb, Ab, Cb at frets 0, 1, 2, 3, 6, 7, 8, 9, 12

High E string: F, Gb, Abb, Ab, Cb, C, Db, Ebb at frets 1, 2, 3, 4, 7, 8, 9, 10

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Gb messiaen's mode #4

Messiaen's mode 4 is an eight note mode of limited transposition: half, half, minor 3rd, half repeated twice, giving clustered pairs of half steps separated by leaps. It repeats at the tritone, so only six transpositions exist. The clusters make it naturally chromatic and ominous, suited to modern classical writing and angular jazz lines that pivot around the tritone.

it consists of these notes and degrees:

G♭

I

A𝄫

bII

A♭

II

C♭

IV

C

#IV

D♭

V

E𝄫

bVI

F

VII

messiaen's mode #4 in all 12 keys, with chords and related scales

tip
  • Practice its cell half-half-minor 3rd-half from Gb; two cells complete the octave, and the scale repeats at the tritone.
  • Only six transpositions exist: a phrase moved six frets returns to the same notes, which makes tritone call-and-response free.
  • The chromatic clusters invite legato: slide through the paired half steps and leap the minor 3rd cleanly.
  • Anchor writing on the root and b5 (C) axis... both are in the scale, and the symmetry pivots on them.

How to play G♭ messiaen's mode #4 on guitar

Lowest root sits at fret 2 on the low E string, so box one lives right down at the bottom of the neck. Three open strings belong here, though the root and the fifth are not among them. Six flats sit in the signature. Capo at fret 2 turns the shape into E fingerings, which lets you trade an awkward flat key for an open one. Position shift comes at fret 6, giving box one four frets of room.

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