This unique tuning, playfully referred to in its origin as "My fam just detune my guitar completely", offers a resonant and somewhat melancholic soundscape. It's a tuning that invites experimentation and exploration, diverging significantly from standard guitar tunings.

Verbal Analysis

The open strings immediately present a full G dominant 7th chord with a D in the bass (G7/D). This creates a rich, full-bodied sound that is perfect for blues, folk, and even some rock or experimental genres. The lower strings are significantly dropped, giving a deep, resonant quality, while the upper strings maintain a familiar G and B, culminating in an F on the high string. This combination provides a distinct harmonic color – simultaneously familiar yet fresh.

The pairing of two Gs and two Bs across the middle strings (G2, B2, G3, B3) provides a strong, almost drone-like foundation for the G and B tones, allowing for melodic lines to be played on the outer strings while maintaining a full harmonic presence. The lowest D gives a solid bass anchor.

Technical Analysis

The tuning from low to high is D2 G2 B2 G3 B3 F4. Let's break down the intervals relative to the lowest D:

• String 6 (D2): Root
• String 5 (G2): Perfect 4th above D
• String 4 (B2): Major 6th above D
• String 3 (G3): Octave of G2, or Perfect 4th above D (one octave higher)
• String 2 (B3): Octave of B2, or Major 6th above D (one octave higher)
• String 1 (F4): Minor 3rd above D, or Minor 7th above G.

Chords within Reach:

• Open Chord: As mentioned, the open tuning itself is a ringing G7/D chord. This makes it instantly gratifying for strumming or fingerstyle in G dominant contexts.
• Movable Dominant 7ths: While not a standard open tuning for easy barre chords, the structure allows for creative voicings. For instance, a barre across strings 6, 5, and 4 at the 5th fret would yield A-D-F#, which combines with the open 3rd and 2nd strings (G and B) to create interesting, rich harmony. The nature of the G7/D open chord suggests that blues-inflected dominant chords could be readily formed with minimal effort.
• Power Chords: Simple two-note power chords (root-fifth) are easily formed on the 6th and 5th strings by fretting at the same fret. For example, barring at the 5th fret (A-D) would give you an A5 power chord with an open D on string 5.
• Minor Chords: The presence of G and B (a major third) on the middle strings means that to achieve a G minor sound, the B strings would need to be flatted (to Bb). However, creating minor chords with other roots (e.g., Am or Em) would involve specific fingerings due to the unique intervals of this tuning.

Tuning Notes (Low to High):

String 6: D2
String 5: G2
String 4: B2
String 3: G3
String 2: B3
String 1: F4

How to Tune (from Standard EADGBe):

• String 6 (Low E): Tune down 2 semitones from E2 to D2. This is a moderate drop and should be fine with standard gauge strings.
• String 5 (A): Tune down 2 semitones from A2 to G2. This is a moderate drop and should be fine with standard gauge strings.
• String 4 (D): Tune down 3 semitones from D3 to B2. This is a moderate drop and should be fine with standard gauge strings.
• String 3 (G): Keep as is; no change (0 semitones) from G3 to G3.
• String 2 (B): Keep as is; no change (0 semitones) from B3 to B3.
• String 1 (High E): Tune up 1 semitone from E4 to F4. This is a small adjustment and should be fine with standard gauge strings.

Important Note: Significant changes (exceeding 4 semitones up or down) can put undue stress on your guitar or require a different string gauge for optimal playability and tension. All movements for this tuning are within a safe range for standard strings, though careful tuning is always recommended.