This is a deeply resonant and notably low tuning for a 7-string guitar, affectionately known by its primary notes. The tuning, also expressible as Ab Db Ab Db E Ab Db, is characterized by its powerful and "gloomy" sonic landscape, making it ideal for genres requiring heavy, atmospheric, or extended-range textures. It's built upon a foundation of just four distinct notes (G#, C#, E), which, despite its apparent simplicity, offers immense flexibility for riffing and unique chord voicings.

Verbal Analysis:

The overall feel of this tuning is one of immense depth and a somber, almost melancholic character. The repetition of G# and C# across multiple strings creates a monolithic wall of sound, providing a thick harmonic density perfect for massive power chords and sustained drones. The inclusion of the E string within this G# and C# framework immediately suggests a minor tonality, allowing for easy access to open G# minor chords or variations thereof. Its "flexible" nature comes from the consistent intervals and repeated notes, which can simplify fretboard navigation for certain patterns. As noted in the original description, this tuning sits very low, and while the individual string movements are not extreme, the overall low register means that a higher gauge string set is highly recommended to maintain proper tension, intonation, and avoid fret buzz. A guitar setup by a professional might also be beneficial to optimize playability at these extreme low frequencies.

Technical Analysis:

• Instrument: 7-string Guitar
• Open Notes (Low to High): G2#, C3#, G3#, C4#, E3, G4#, C5#
• Core Tones: The tuning revolves around the notes G#, C#, and E.
• Interval Structure:
  • String 7 (G2#) to String 6 (C3#): Perfect 4th (5 semitones)
  • String 6 (C3#) to String 5 (G3#): Perfect 5th (7 semitones)
  • String 5 (G3#) to String 4 (C4#): Perfect 4th (5 semitones)
  • String 4 (C4#) to String 3 (E3): This is a unique and wide interval. From C4# down to E3 is a Major 6th. This means the 3rd string (E3) is significantly lower than the 4th string (C4#), creating an interesting voicing opportunity.
  • String 3 (E3) to String 2 (G4#): Compound Major 3rd (an octave and a major third, or 15 semitones). This is another large jump, bringing the G# an octave higher than the E.
  • String 2 (G4#) to String 1 (C5#): Perfect 4th (5 semitones)
• Open Chords & Harmonies:
  • The open strings G#2 C#3 G#3 C#4 E3 G#4 C#5 collectively form a rich G# minor 11 chord (G#-C#-E-G#-C# with multiple octaves). This means that simply strumming all open strings yields a powerful, full, and dark G# minor chord voicing.
  • The repeated G# and C# notes on the lower strings (7, 6, 5, 4) provide a strong foundation for G# power chords, easily achieved with minimal fretting.
  • The unique sequence of C#4 -> E3 -> G4# (strings 4, 3, 2) offers interesting dissonances and melodic possibilities that break from typical linear string progressions, opening up possibilities for unconventional arpeggios and riffs.

Here's a detailed breakdown of each string's target note and instructions on how to achieve this unique tuning from standard 7-string (B E A D G B E) tuning:

• String 7 (Low B String): Tune to G2#
• String 6 (E String): Tune to C3#
• String 5 (A String): Tune to G3#
• String 4 (D String): Tune to C4#
• String 3 (G String): Tune to E3
• String 2 (B String): Tune to G4#
• String 1 (High E String): Tune to C5#

How to Tune (from Standard 7-String B E A D G B E):

The following instructions detail the movement for each string based on its standard 7-string tuning (B E A D G B E):

• String 7 (Standard B String): Tune down 3 semitones.
• String 6 (Standard E String): Tune down 3 semitones.
• String 5 (Standard A String): Tune down 1 semitone.
• String 4 (Standard D String): Tune down 1 semitone.
• String 3 (Standard G String): Tune down 3 semitones.
• String 2 (Standard B String): Tune down 3 semitones.
• String 1 (Standard High E String): Tune down 3 semitones.

Note: All strings are tuned down. While individual string movements (1 to 3 semitones) are generally within a reasonable range for standard strings, this tuning results in a very low overall pitch. A higher gauge string set is strongly recommended to maintain optimal string tension, intonation, and playability, especially on the lower strings.