The 'A Minor 7 Open' tuning transforms your guitar into an immersive soundscape, centered around the melancholic yet rich character of an A minor 7 chord. By simply strumming all open strings, you immediately evoke a full, resonant A minor 7 chord (A-C-E-G), making it a fantastic base for blues, jazz, folk, and introspective compositions. The duplicated A and E notes across different octaves provide a lush, harmonically complete sound, adding depth and fullness to your open chords.

Technically, the open notes are A2-E3-G3-C4-E4-A4 (from low 6th string to high 1st string). This configuration naturally spells an A minor 7 chord (Root, Perfect 5th, Minor 7th, Minor 3rd, Perfect 5th, Octave). This means that a single finger barre across any fret will instantly yield a minor 7th chord corresponding to that fret (e.g., barre at the 2nd fret would give a B minor 7). This simplifies chord voicings and opens up new melodic possibilities.

The original tuning description mentions a 'capo on 5 fret'. If this tuning (A-E-G-C-E-A) is established at the nut, then applying a capo at the 5th fret would effectively transpose the open tuning to a D minor 7 chord (D-F-A-C-F-D). This offers an entirely new sonic palette, allowing for exploration of different keys while maintaining the inherent minor 7th voicing. It's important to note a discrepancy in the original description, which mentions the 'A string tuned down'; however, based on the provided string movement data, the 5th string (A in standard tuning) is tuned significantly UP.

Chords Within Reach:

• **Open A Minor 7 (A2-E3-G3-C4-E4-A4):** Strumming all strings open provides this rich, resonant chord.
• **Barre Minor 7ths:** A single finger barre across any fret (e.g., 1st fret for A#m7, 2nd fret for Bm7, etc.) creates a perfect minor 7th chord shape, making complex progressions accessible.
• **Sus2/Sus4 Variations:** With minimal finger movement, you can easily create suspended 2nd or 4th voicings over the minor 7th, adding color and movement to your chords.
• **Related Minor Chords:** This open tuning serves as an excellent foundation for exploring other minor chords that share common tones or shapes, such as minor triads or minor 9th chords, with slight fretboard adjustments.

How to Tune:

Please note: All strings are tuned significantly up from standard EADGBe tuning. For movements exceeding 4 semitones up or down, it is generally advised to consider a different gauge string to ensure string integrity and proper tension, and to prevent potential damage to your instrument or strings. Proceed with caution.

• **6th String (Low E):** Tune up 5 semitones from E2 to A2. (Note: This is a significant upward tension adjustment. Care should be taken, and a lighter gauge string may be advisable.)
• **5th String (A):** Tune up 7 semitones from A2 to E3. (Note: This is an extremely significant upward tension adjustment. A lighter gauge string is highly recommended, or this tuning should be approached with extreme caution to avoid string breakage or neck damage.)
• **4th String (D):** Tune up 5 semitones from D3 to G3. (Note: This is a significant upward tension adjustment. Care should be taken, and a lighter gauge string may be advisable.)
• **3rd String (G):** Tune up 5 semitones from G3 to C4. (Note: This is a significant upward tension adjustment. Care should be taken, and a lighter gauge string may be advisable.)
• **2nd String (B):** Tune up 5 semitones from B3 to E4. (Note: This is a significant upward tension adjustment. Care should be taken, and a lighter gauge string may be advisable.)
• **1st String (High E):** Tune up 5 semitones from E4 to A4. (Note: This is a significant upward tension adjustment. Care should be taken, and a lighter gauge string may be advisable.)

**6th String (Low E):** Tuned to A2. This is the fundamental root note of the A minor 7 chord, providing a strong, deep foundation.

**5th String (A):** Tuned to E3. This is the perfect 5th of A, adding harmonic stability and richness to the open chord voicing.

**4th String (D):** Tuned to G3. This is the minor 7th of A, giving the chord its characteristic jazzy or bluesy flavor and tension.

**3rd String (G):** Tuned to C4. This is the minor 3rd of A, establishing the essential minor quality of the chord.

**2nd String (B):** Tuned to E4. Another perfect 5th of A, positioned an octave higher than the 5th string, adding further resonance and fullness in the mid-range.

**1st String (High E):** Tuned to A4. This is an octave higher root note, completing the chord with brightness and chime.