Verbal Analysis:

This captivating guitar tuning, aptly named "Bsus4/Esus2" by its creator, offers a unique soundscape described as a "Modal E tuning with a low base." From the moment you strum the open strings, you're enveloped in a deep, resonant, and atmospheric sound. The presence of a low B (B1) string provides a powerful and fundamental bass foundation, allowing for rich, drone-like textures. The repetition of B and E notes across multiple octaves creates a harmonically full and sustained open chord, ideal for expansive strumming, ambient soundscapes, or fingerstyle playing that emphasizes open string resonance.

It evokes a sense of openness and introspection, lending itself well to genres like folk, progressive rock, ambient music, or even film scoring where a modal, suspended quality is desired. The tuning encourages exploration beyond traditional chord shapes, inviting players to discover new voicings and melodic possibilities by leveraging the sustained quality of the open strings.

Technical Analysis:

This is an open tuning with the notes B1-E2-B2-F#4-B3-E4 (from the lowest to the highest string). The open strings collectively form an extended Bsus4 chord (B-E-F#). Specifically, the tuning provides the root B (on strings 6, 4, and 2), the suspended fourth E (on strings 5 and 1), and the perfect fifth F# (on string 3). The abundance of B and E notes across various octaves reinforces the suspended harmony and creates a rich, resonant drone effect when strummed openly.

The intervals from the lowest B (B1) are a perfect fourth (E2), an octave (B2), a perfect fifth (F#4, a major tenth from B2), an octave (B3 from B2), and an eleventh (E4, two octaves above E2). This structure provides a strong harmonic foundation. While the primary open chord is Bsus4, the strong presence of E also hints at an Esus2 quality (E-B-F#), justifying the tuning's dual name.

Open Chords and Accessible Shapes:

• Open Strum: An immediate, full Bsus4 chord (B-E-B-F#-B-E). This is excellent for creating atmospheric and sustained textures without requiring any fretting.
• Barre Chords: By barring across all strings at any fret, you can easily transpose the Bsus4 shape up or down the neck, creating other suspended 4th chords (e.g., barre at the 2nd fret for C#sus4).
• Drone Tones: The repeated B and E notes make it very easy to create melodic lines over sustained B and E drones, allowing for modal improvisation.
• Power Chords: Two-finger shapes can easily yield power chords (root-fifth) using the various B and F# notes. For example, using the 6th (B1) and 3rd (F#4) strings provides a very wide-voiced B5.
• Modal Explorations: The "Modal E" description is apt. While the lowest note is B, the suspended 4th (E) is prominent. Exploring scales and arpeggios that emphasize E or B as tonal centers will yield compelling modal sounds, especially with the open strings ringing out.

The significant downtuning on the lower strings (especially -5 semitones for the 6th and 5th strings) may require heavier gauge strings for optimal tension and intonation. The low B1 string, in particular, will benefit greatly from a dedicated low B string or a very heavy gauge to avoid a floppy feel and ensure clear tone.

Tuning Notes:

String 6 (low E): B1
String 5 (A): E2
String 4 (D): B2
String 3 (G): F#4
String 2 (B): B3
String 1 (high E): E4

How to Tune:

To achieve a tuning based on the provided string movements from standard EADGBE, follow these specific string adjustments. Please note that significant downtuning (more than 4 semitones) might benefit from a heavier string gauge to maintain optimal tension and intonation.

• String 6 (Low E - Standard E2): Tune down 5 semitones. This will bring your E string to B1. (This is a significant drop; a heavier gauge string is advised).
• String 5 (A - Standard A2): Tune down 5 semitones. This will bring your A string to E2. (This is a significant drop; a heavier gauge string is advised).
• String 4 (D - Standard D3): Tune down 3 semitones. This will bring your D string to B2.
• String 3 (G - Standard G3): Tune down 1 semitone. This will bring your G string to F#3.
• String 2 (B - Standard B3): Keep as is; no change (0 semitones). Your B string remains B3.
• String 1 (High E - Standard E4): Keep as is; no change (0 semitones). Your high E string remains E4.

Disclaimer regarding string gauge: Tuning down more than 4 semitones (e.g., String 6 and String 5) or tuning up more than 4 semitones from standard pitch might require a different gauge string to maintain proper tension and avoid intonation issues or potential string breakage. For optimal performance, especially with the B1 and E2 notes, heavier gauge strings are generally advised.