What is Open G tuning?

Open G tuning changes the strings to D-G-D-G-B-D (low to high). Strumming all strings open produces a G major chord. Barring any fret gives you a major chord at that position, which is ideal for slide guitar.

What scales work in Open G tuning?

The G major pentatonic and G blues scale are natural fits. For slide playing, the major scale patterns align perfectly with the open tuning. The Mixolydian mode also works beautifully for a bluesy feel.

Why do slide guitarists use Open G?

Open G makes slide guitar much more intuitive. Since barring across all strings at any fret produces a major chord, you can play melodies and chords simply by moving the slide up and down the neck. This is why it's been the standard tuning for blues slide guitar.

F# Phrygian Guitar Scale

Guitar scale in Open G tuning — fretboard diagram

Tuning

Frets

F# Phrygian in Open G — Notes and Intervals

The F# Phrygian scale is the third mode of the major scale, defined by its immediate dark and tense character. On Guitar, its notes are F#, G, A, B, C#, D, E. It has a strong Spanish or ethnic flavor, making it the definitive sound of Flamenco. In modern contexts, it is widely used in heavy metal to create an aggressive, brooding atmosphere. The diatonic chords of F# Phrygian are F#m7, GMaj7, A7, Bm7, C#m7b5, DMaj7, Em7. Commonly used in Flamenco, Metal, Djent, Middle Eastern. Notable players include Al Di Meola, Metallica, Meshuggah, Paco de Lucia. Use over sus(b9), m7 chords in Phrygian contexts. Often played over a droning root note or power chord. The b2 → 1 resolution is the mode's signature move.

Notes: F#, G, A, B, C#, D, E

Intervals: 1P, 2m, 3m, 4P, 5P, 6m, 7m

Degrees: 1 b2 b3 4 5 b6 b7

Formula: H-W-W-W-H-W-W

Number of notes: 7

Tuning: Open G (D-G-D-G-B-D)

Diatonic Chords

F♯m7 — GMaj7 — A7 — Bm7 — C♯m7♭5 — DMaj7 — Em7

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.

BluesSlide GuitarRockCountryFolkRoots

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

DarkAggressiveUrgentExotic

The b2 interval from the root creates an immediate sense of tension and 'danger'. This single semitone is what gives Phrygian its unmistakable flamenco/metal character.

Chord Progressions Using This Scale

i – VII – VI – V (Andalusian Cadence)World / Flamenco — Tension & Drama

Explore This Scale in Other Tunings

← All Guitar scales in Open G tuning