This unique 7-string guitar tuning, named CFGFGCD# Deep Resonance Tuning, presents a sonic landscape that is both deep and harmonically intriguing. As noted in the original description, "the power chord shape is everywhere," hinting at its potential for powerful, drone-like riffs and open, resonant voicings.

Technical Analysis:

The tuning sets the strings to C2 F2 G2 F3 G3 C4 D#5, from the lowest (7th) to the highest (1st) string. Let's break down the intervals between adjacent strings:

• String 7 (C2) to String 6 (F2): A Perfect Fourth (P4).
• String 6 (F2) to String 5 (G2): A Major Second (M2).
• String 5 (G2) to String 4 (F3): A Minor Seventh (m7), or an inverted Major Second. This creates a significant jump in pitch.
• String 4 (F3) to String 3 (G3): A Major Second (M2).
• String 3 (G3) to String 2 (C4): A Perfect Fourth (P4).
• String 2 (C4) to String 1 (D#5): A Minor Third (m3).

The prevalence of C, F, and G notes across different octaves provides a rich, layered foundation. Specifically, you have C notes on the 7th (C2) and 2nd (C4) strings, F notes on the 6th (F2) and 4th (F3) strings, and G notes on the 5th (G2) and 3rd (G3) strings. This creates a resonant drone capability, especially with the octaves of C, F, and G echoing each other. The open tuning does not immediately resolve to a standard major or minor chord, but rather a more complex harmonic structure, hinting at C minor (C, D#, G are present) with added Fs, creating an Fadd9/C type of sonority.

Verbal Analysis & Playability:

While not a traditional open major or minor tuning, the arrangement of notes in CFGFGCD# Deep Resonance Tuning lends itself to specific playing styles. The phrase "the power chord shape is everywhere" likely refers to the ease of finding root-fifth relationships by utilizing the octaves and perfect fourths present. For example, the lowest C (string 7) and the G (string 5) form a natural C5 power chord. Similarly, F (string 6) and C (string 2) form an F5. The consistent F and G notes across strings 6-3 (F2-G2-F3-G3) also invite experimental drone work, polyphonic textures, and arpeggios, allowing a player to easily create shifting harmonic landscapes with minimal fretting.

The high D#5 on the first string adds a bluesy or darker flavor, making it suitable for genres like metal, progressive rock, or even some forms of jazz and world music where a minor third interval over a C root is desired for tension and release. This tuning encourages a creative approach, moving beyond standard chord shapes to explore unique sonic textures and powerful, resonant low-end riffs, particularly with its deeply resonant C and octave F and G notes.

How to Tune:

Follow these instructions carefully to achieve the CFGFGCD# Deep Resonance Tuning. The 'fret_text' describes the precise movement for each string:

• 7th String (Lowest, C2): Tune up 1 semitones to reach C2.
• 6th String (F2): Tune up 1 semitones to reach F2.
• 5th String (G2): Tune down 2 semitones to reach G2.
• 4th String (F3): Tune up 3 semitones to reach F3. Please exercise caution as tuning up by 3 semitones significantly increases string tension.
• 3rd String (G3): Keep as is; no change (0 semitones) at G3.
• 2nd String (C4): Tune up 1 semitones to reach C4.
• 1st String (Highest, D#5): Tune down 1 semitones to reach D#5.

7th String: C2 (Lowest C)

6th String: F2

5th String: G2

4th String: F3

3rd String: G3

2nd String: C4 (Middle C)

1st String: D#5 (Highest D#)