In Lesson 1, you learned the minor pentatonic box shape in A. Here is the powerful part: that same shape works in every key. You do not need to learn 12 different fingerings. In fourths tuning, transposing means sliding the entire shape to a new starting fret. The fingering stays identical.
The Rule
The root of the minor pentatonic sits on the low E string. Whatever fret your index finger lands on determines the key. Fret 5 is A, fret 3 is G, fret 8 is C. The rest of the shape falls into place around the root automatically because every string pair in fourths tuning has the same interval.
Here are some common keys and their starting frets on the E string:
- E minor pentatonic - open position (fret 0)
- A minor pentatonic - fret 5
- D minor pentatonic - fret 10
- G minor pentatonic - fret 3
- C minor pentatonic - fret 8
Try It Yourself
Select a key below to see the box shape at its position. Notice how the shape is structurally identical every time - the distances between dots never change. Only the position on the neck moves.
Why This Works
In standard tuning, the major third between the G and B strings breaks the symmetry. Scale shapes have to be modified when crossing that boundary, which is why standard tuning players memorize 5 CAGED patterns. In fourths tuning, every string pair is a perfect fourth. There is no boundary to adjust for, so one shape covers the entire neck.
Practice
Exercise 1: Slide by Half Steps
Play the box shape at fret 0 (E minor). Slide the entire shape up one fret to F minor. Then F# minor. Continue chromatically up to fret 12 (E minor again, one octave higher). This builds spatial awareness of where each key lives on the neck.
Exercise 2: Jump Between Keys
Play A minor pentatonic (fret 5), then jump to D minor pentatonic (fret 10), then back to A. The shape is the same both times - only your hand position changes. Try other pairs: G (fret 3) and C (fret 8), E (fret 0) and B (fret 7).