Also written B♭mMaj7, B♭minmaj7 or B♭mmaj7
B♭ minor major 7th contains B♭, D♭, F, and A. The open voicing uses one open string and three fretted notes, keeping the hand compact.
The same three notes, with a different one in the bass.
B♭ minor major 7th is built from the formula 1, ♭3, 5, 7. The major 7th interval between B♭ and A gives the chord its characteristic bite. Compare it to B♭ minor, which omits the A and sounds more stable.
B♭ minor major 7th appears in B♭ minor progressions, often as a passing chord between B♭ minor and B♭ minor 7th. It fits jazz waltzes and neo-soul. Use it before B♭ minor or B♭ 5th.
The open voicing keeps B♭ in the bass for a clear root. The B♭minmaj7/A inversion puts A in the bass, creating a leading-tone pull toward B♭ minor.
B♭ minor major 7th is played at the 1st fret as 2 1 1 1: barre your index finger across fret 1 and pinky finger on the G string at fret 2.
Tip — The open A string must ring clearly while the other fingers fret nearby, requiring precise hand position.
| String | Fret | Finger | Note |
|---|---|---|---|
| 4 (G) | 2 | 4 | A (7) |
| 3 (C) | 1 | 1 (barre) | D♭ (♭3) |
| 2 (E) | 1 | 1 (barre) | F (5) |
| 1 (A) | 1 | 1 (barre) | B♭ (1) |
B♭ minor major 7th is played in open position as 3 1 1 0: ring finger on the G string at fret 3, index finger on the C string at fret 1 and middle finger on the E string at fret 1. The A string rings open.
| String | Fret | Finger | Note |
|---|---|---|---|
| 4 (G) | 3 | 3 | B♭ (1) |
| 3 (C) | 1 | 1 | D♭ (♭3) |
| 2 (E) | 1 | 2 | F (5) |
| 1 (A) | open | — | A (7) |
B♭ minor major 7th is played at the 3rd fret as 3 5 5 4: index finger on the G string at fret 3, ring finger on the C string at fret 5, pinky finger on the E string at fret 5 and middle finger on the A string at fret 4.
| String | Fret | Finger | Note |
|---|---|---|---|
| 4 (G) | 3 | 1 | B♭ (1) |
| 3 (C) | 5 | 3 | F (5) |
| 2 (E) | 5 | 4 | A (7) |
| 1 (A) | 4 | 2 | D♭ (♭3) |
B♭ minor major 7th is played in open position as 6 5 6 0: middle finger on the G string at fret 6, index finger on the C string at fret 5 and ring finger on the E string at fret 6. The A string rings open.
| String | Fret | Finger | Note |
|---|---|---|---|
| 4 (G) | 6 | 2 | D♭ (♭3) |
| 3 (C) | 5 | 1 | F (5) |
| 2 (E) | 6 | 3 | B♭ (1) |
| 1 (A) | open | — | A (7) |
B♭ minor major 7th is written B♭mmaj7, B♭minmaj7, or B♭mM7. The ASCII root spelling is Bb. It is also spelled A♯ in enharmonic notation for the same sounding root.
The 3rd fret voicing raises the pitch but keeps the same intervals. It is useful when the open position is too dark for the arrangement.
The displayed shape preserves only the supplied notes and interval formula. The major 7th adds a sharper, more dissonant edge.