This is a highly experimental and deep guitar tuning, characterized by its extremely low fundamental notes and significant sonic contrasts. It features a unique low-end drone created by the A# and A strings, combined with an unusually deep octave drop on the B string.

Technical Analysis:

• Instrument Type: Guitar
• Open Notes: A#2, A2, D3, G3, B2, E4 (from low to high)
• Core Modifications:
  • The 6th string (typically E) is tuned down 6 semitones (a Major 3rd) to A#2, providing a very deep, sharp fundamental.
  • The 5th (A), 4th (D), and 3rd (G) strings remain at their standard pitch, creating a familiar core but surrounded by drastic changes.
  • The 2nd string (typically B3) undergoes a massive transformation, dropping a full octave (12 semitones) to B2. This contributes significantly to the tuning's exceptionally low and dark character.
  • The 1st string (high E) retains its standard E4 pitch.

Verbal Description & Playability:

The most striking feature of this tuning is the immediate dissonance and heavy resonance provided by the two lowest strings: A# and A. When strummed open, these two notes, being a minor second apart, create a thick, buzzing, almost industrial drone. This makes the tuning ideal for heavy, atmospheric, or experimental genres rather than traditional, consonant open chords.

The exceptionally low B string (B2) adds an enormous depth, blending almost like a bass guitar with the lower A# and A strings. While the D, G, and high E strings remain standard, allowing some familiarity for lead lines or higher voicings, the overall character is dominated by the profound low end. Chords will sound vastly different and much deeper, particularly those involving the second string. Power chords on the lower strings could be achieved by muting the 5th string when using the A# as a root, or by finding shapes that effectively incorporate the dissonant semitone. The tuning invites exploration of dissonant harmonies and drone textures.

Due to the extreme string tension changes on the 6th and 2nd strings, a heavier string gauge is highly recommended to maintain playability and intonation, especially for the B2 string which has dropped a full octave.

How to Tune:

• String 6 (Low E): From standard E2, Tune down 6 semitones to A#2. (Caution: This significant drop of 6 semitones means a different string gauge is generally advised.)
• String 5 (A): From standard A2, Keep as is; no change (0 semitones) at A2.
• String 4 (D): From standard D3, Keep as is; no change (0 semitones) at D3.
• String 3 (G): From standard G3, Keep as is; no change (0 semitones) at G3.
• String 2 (B): From standard B3, Tune down 12 semitones to B2. (Caution: This extreme drop of a full octave means a different string gauge is strongly advised to maintain playability and prevent string breakage.)
• String 1 (High E): From standard E4, Keep as is; no change (0 semitones) at E4.

String 6 (Low E Equivalent): Tuned to A2#. This is 6 semitones down from standard E2.

String 5 (A Equivalent): Tuned to A2. This string remains at its standard pitch.

String 4 (D Equivalent): Tuned to D3. This string remains at its standard pitch.

String 3 (G Equivalent): Tuned to G3. This string remains at its standard pitch.

String 2 (B Equivalent): Tuned to B2. This is 12 semitones down from standard B3, a full octave drop.

String 1 (High E Equivalent): Tuned to E4. This string remains at its standard pitch.