Box 2 anchors on the scale's second degree — in E minor pentatonic, the G at fret 3 of the low string. It shares its floor with box 1's ceiling, which is the load-bearing fact of the whole system: boxes are not islands, they are overlapping windows, and this is the first overlap most players learn to cross.
The window, computed (E minor pentatonic)
| String | Frets | Notes |
|---|---|---|
| 6th string (E) | 3 / 5 | G / A |
| 5th string (A) | 2 / 5 | B / D |
| 4th string (D) | 2 / 5 | E / G |
| 3rd string (G) | 2 / 4 | A / B |
| 2nd string (B) | 3 / 5 | D / E |
| 1st string (E) | 3 / 5 | G / A |
Using it
Box 2's personality is major-flavored: its anchor note is the relative major root (G, for E minor pentatonic), so phrases starting here over a G chord sound instantly sweeter than the same fingers in box 1. Practice entering mid-phrase from below — play up box 1, slide the index up to this window on the 3rd string, finish the line here. Then repeat the trick upward into box 3. Full fingerings: E minor pentatonic.