Pop improvisation in D New
The relative B minor pentatonic scale (position 1) covers this whole pop grid in D major (D-A-Bm-G), including the Bm chord, which is its direct root.
Tips
Over the Bm chord, the scale matches the chord being played exactly: it's the best landmark on the grid for finding the B root by ear.
Chord progression — D
Bar 1
D
Bar 2
A
Bar 3
Bm
Bar 4
G
Fretboard position
root note other scale note