F Messiaen's Mode #4 Guitar Scale
Guitar scale in 8-string tuning — fretboard diagram
F Messiaen's Mode #4 in 8-string — Notes and Intervals
The F Messiaen's Mode #4 scale is a symmetrical scale designed to have no single tonic. On Guitar, the notes are F, Gb, G, Bb, B, C, Db, E. Messiaen used it to create what he called the charm of impossibilities, evoking a sense of spiritual wonder where the listener loses their sense of direction. Commonly used in Contemporary Classical, Film Scores, Experimental. Notable players include Olivier Messiaen. Use for avant-garde composition and film scoring where traditional tonal direction should dissolve.
Notes: F, Gb, G, Bb, B, C, Db, E
Intervals: 1P, 2m, 2M, 4P, 4A, 5P, 6m, 7M
Degrees: 1 b2 3 4 #5 6 b7 8
Formula: H-H-WH-H-H-H-WH-H
Number of notes: 8
Tuning: 8-string (F#-B-E-A-D-G-B-E)
About 8-string Tuning
The 8-string guitar adds both a low B and a low F# string (F#-B-E-A-D-G-B-E), pushing the instrument's range almost into bass guitar territory. This massive tonal range has become the weapon of choice for djent, progressive metal, and experimental composers who need bone-crushing low-end and soaring highs in a single instrument.
With artists like Tosin Abasi, Meshuggah, and After the Burial leading the charge, the 8-string guitar has redefined what's possible in modern heavy music. The low F# string delivers subsonic heaviness that you can feel in your chest, while the upper strings maintain standard guitar voicings for leads and clean passages. Extended-range compositions often exploit the full span of the instrument, creating a wall of sound that covers bass, rhythm, and lead guitar roles simultaneously.
Notable artists: Meshuggah, Animals as Leaders, After the Burial, Intervals, Monuments
Best for: Djent polyrhythms, extended-range metal riffs, experimental compositions, and one-instrument arrangements spanning bass to lead
Musical Character
Creates what Messiaen called 'the charm of impossibilities' — the listener loses their sense of tonal direction, creating a spiritual disorientation that evokes wonder.