The standard grips this chord is usually shown with.
BmMaj7 is B, D, F# and A# — Bm with the major seventh added on top.
It sounds tense and wrong-footed. A minor triad carrying a major seventh: the semitone under the root over a minor chord is the first bar of a line cliché.

| B | D | F# | A# |
|---|---|---|---|
| 1 | ♭3 | 5 | 7 |
Minor tonic — the tonic of the melodic minor.
Also written BmM7, Bm(maj7), B-Δ7 or BminMaj7. The same chord either way; which spelling you meet depends on who wrote the chart.
BmMaj7 in root position puts B in the bass, which is the chord as it is spelled: the note it is named after underneath everything else.
6 of BmMaj7’s 7 common shapes do this: x20302, x24332, xx9776, 798777, x-x-9-11-11-10, x-14-12-11-11-x.
Start with x20302 — no barre and 2 open strings. 1 of the 7 shapes here sits in open position. 1 of the 7 needs a barre. Together they cover the neck from the 2nd fret to the 14th.
| Frets | Where | Bass | Top | Hand |
|---|---|---|---|---|
| x20302 | open position | B, root position | F# | 2 open strings |
| x24332 | 2nd fret | B, root position | F# | all fretted |
| x54476 | 4th fret | D, 1st inversion | A# | all fretted |
| xx9776 | 6th fret | B, root position | A# | all fretted |
| 798777 | 7th fret | B, root position | B | barred |
| x-x-9-11-11-10 | 9th fret | B, root position | D | all fretted |
| x-14-12-11-11-x | 11th fret | B, root position | A# | all fretted |
The same notes rebuilt from scratch give 7 shell, 14 drop 2, 10 drop 3 and 6 open string voicings, each on its own page.
Tensions. A shell of BmMaj7, root, third and seventh, leaves a string free, and the tones that belong over it are the 9 (C#), the 11 (E) and the 13 (G#).
How you get to it. The turn that lands on BmMaj7 is C#m7♭5 to F#7♭9: the ii and the V of B minor, which is where a minor tonic is usually arrived at rather than simply begun on.
Every note of BmMaj7 is in B harmonic minor and B melodic minor.
Change one note of BmMaj7 and you have Bm (drop the major seventh), Bmaj7 (the minor third becomes a major third), Bm6 (the major seventh becomes a sixth), Bm7 (the major seventh becomes a flat seventh), BmMaj7b5 (the fifth becomes a flat fifth) or BmMaj9 (add the ninth).
BmMaj7 is a minor chord — root, minor third, fifth. Minor chords on every root.
On BmMaj7’s sound and use this page follows Mark Levine, The Jazz Theory Book (Sher Music, 1995). The shapes and the derived voicings come from different places, and both are explained in where the chords and the theory come from.
Shows each chord the way this style would voice it, and marks which of its alternatives belong to the idiom.