Dobro and B m(maj7)

No bar position in GBDGBD spells B m(maj7).

B m(maj7) spells B – D – F# – A#, but the dobro chair has no bar for it: at every fret of the GBDGBD neck, and on every short slant, the strings that land on its tones leave one out or too few of them ring.

In a country arrangement that is an ordinary night's work — the dobro plays the part of the chord the bar can reach, or a single-string line through it, and lets the guitar and the rest of the band carry the chord. This page draws no grip a steel cannot hold.