F Messiaen's Mode #4 Guitar Scale
Guitar scale in Open G tuning — fretboard diagram
F Messiaen's Mode #4 in Open G — 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: Open G (D-G-D-G-B-D)
About Open G Tuning
Open G tuning (D-G-D-G-B-D) produces a G major chord when strummed open, making it the definitive tuning for slide guitar and delta blues. The tuning's natural consonance means that barring across any fret gives you a major chord, which is why it's been the backbone of blues and roots music for over a century.
From Robert Johnson to Keith Richards, Open G has shaped some of the most iconic music ever recorded. Keith Richards famously removes the low 6th string entirely in this tuning, creating his signature five-string sound on songs like 'Start Me Up' and 'Brown Sugar'. For slide players, Open G is essential — it allows clean, singing slide lines across all strings with minimal effort.
Notable artists: Keith Richards, Robert Johnson, Ry Cooder, Joni Mitchell, The Black Crowes
Best for: Slide guitar, delta blues, Keith Richards-style rock riffs, and open-string fingerpicking
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.