The "6/9 Core" tuning lives up to its name, offering a sound that is indeed "deep and sarcastic almost. Cheeky perhaps." This is a truly unconventional and characterful tuning that defies standard expectations. Its unique open string arrangement creates a spacious and resonant sonic landscape, perfect for players looking to explore distinctive harmonic territories and evocative moods.

Technical Breakdown:

• The open string notes are: C#3, F#3, B2, G#4, B3, D#5 (from low E to high E string).
• A striking feature of this tuning is the significantly lower pitch of the 4th string (B2) compared to the 5th (F#3) and 6th (C#3) strings. This creates a fascinating inversion, making the 4th string the true bass foundation of the tuning and allowing for incredibly wide and resonant voicings on the lower registers.
• The open strings present a collection of notes including B, C#, D#, F#, G#. This rich set strongly outlines a B Major 6th chord (B, D#, F#, G#), which can be beautifully strummed open using the 4th (B2), 1st (D#5), 5th (F#3), and 3rd (G#4) strings. The 2nd string (B3) reinforces the root, adding depth.
• The C#3 on the 6th string, when played with the open Bmaj6, adds an intriguing color, suggesting possibilities like a Bmaj6(add9) or even hinting at a C# minor 7th over B, depending on context and emphasis.
• The wide intervals, such as the two octaves and a major third between the 4th string (B2) and 1st string (D#5), contribute to a massive, full sound that can be both ethereal and powerful.
• This tuning lends itself well to open, ringing voicings and provides a unique palette for arpeggios and melodic exploration, particularly in keys related to B Major, F# Major, or G# minor. Its "sarcastic" edge likely comes from its unexpected twists and turns, while its "cheeky" nature might stem from the delightful harmonic surprises it offers.

Open String Notes:

String 6 (Low E): C#3
String 5 (A): F#3
String 4 (D): B2
String 3 (G): G#4
String 2 (B): B3
String 1 (High E): D#5

How to Tune:

To achieve the "6/9 Core" tuning, follow these specific adjustments for each string from a standard tuning reference (EADGBe). Remember to tune carefully and in small increments:

• String 6 (Low E): Tune down 3 semitones to C#3.
• String 5 (A): Tune down 3 semitones to F#3.
• String 4 (D): Tune down 3 semitones to B2.
• String 3 (G): Tune up 1 semitone to G#4.
• String 2 (B): Keep as is; no change (0 semitones) at B3.
• String 1 (High E): Tune down 1 semitone to D#5.

Note: All string movements are within recommended limits for standard string gauges (less than +/- 4 semitones). No special string gauge is typically required for this tuning.