# B Minor Major 7th piano chord (BmMaj7)

BmMaj7 contains B, D, F♯ and A♯. A minor triad with the major seventh added on top. F♯ and A♯ are black keys; B and D are white.

- Canonical page: https://piano.org/chords/minor-major-7th/b/
- Entity: chord:minor-major-7th:b
- Notes: B D F♯ A♯
- Formula: 1 ♭3 5 7
- Intervals from root: P1, m3, P5, M7
- Interval stack (semitones): 3 4 4
- Also written: BmMaj7, BmMaj7, B minor major 7th
- Parameters: A440, 12-TET, 165 mm octave, spans centre to centre

## Construction

| Degree | Note | Interval from root | Semitones |
| --- | --- | --- | --- |
| 1 | B | Perfect unison | 0 |
| ♭3 | D | Minor third | 3 |
| 5 | F♯ | Perfect fifth | 7 |
| 7 | A♯ | Major seventh | 11 |

## Fingering

Rest your right hand over the notes with finger 1 on B, finger 2 on D, finger 3 on F♯, finger 5 on A♯. The left hand mirrors it.
Right hand 1-2-3-5, left hand 5-3-2-1. Source: piano.org fingering method v1.

## Inversions

| Position | Bass | Notes in order | Figured bass | Span |
| --- | --- | --- | --- | --- |
| Root position | B | B3 D4 F♯4 A♯4 | 7 | 11 st, 151 mm |
| First inversion (BmMaj7/D) | D | D4 F♯4 A♯4 B4 | 6/5 | 9 st, 124 mm |
| Second inversion (BmMaj7/F♯) | F♯ | F♯4 A♯4 B4 D5 | 4/3 | 8 st, 110 mm |
| Third inversion (BmMaj7/A♯) | A♯ | A♯4 B4 D5 F♯5 | 4/2 | 8 st, 110 mm |

## Voicings (10)

| Voicing | Notes | Span | Relation | Omits or adds |
| --- | --- | --- | --- | --- |
| Close, root position | B3 D4 F♯4 A♯4 | 11 st, 151 mm | identical | none |
| Close, first inversion | D4 F♯4 A♯4 B4 | 9 st, 124 mm | identical | none |
| Close, second inversion | F♯4 A♯4 B4 D5 | 8 st, 110 mm | identical | none |
| Close, third inversion | A♯4 B4 D5 F♯5 | 8 st, 110 mm | identical | none |
| Drop 2 | F♯3 B3 D4 A♯4 | 16 st, 220 mm | identical | none |
| Drop 3 | D3 B3 F♯4 A♯4 | 20 st, 275 mm | identical | none |
| Drop 2 and 4 | B2 F♯3 D4 A♯4 | 23 st, 316 mm | identical | none |
| Shell, root 7 ♭3 | B2 A♯3 D4 | 15 st, 206 mm | subset | omits F♯ |
| Guide tones, ♭3 and 7 | D4 A♯4 | 8 st, 110 mm | subset | omits B and F♯ |
| Rootless close | D4 F♯4 A♯4 | 8 st, 110 mm | subset | omits B |

## One-edit neighbors

| Becomes | Edit | Changes | Common tones |
| --- | --- | --- | --- |
| Bm | 1 ♭3 5 | drops A♯ | 3 |
| Bmaj7 | 1 3 5 7 | D becomes D♯ | 3 |
| Bm7 | 1 ♭3 5 ♭7 | A♯ becomes A | 3 |
| Bm6 | 1 ♭3 5 6 | A♯ becomes G♯ | 3 |
| Bmaj9 | 1 3 5 7 9 | D becomes D♯, C♯ | 3 |
| Bm9 | 1 ♭3 5 ♭7 9 | A♯ becomes A, C♯ | 3 |
| B | 1 3 5 | D, A♯ becomes D♯ | 2 |
| Bdim | 1 ♭3 ♭5 | F♯, A♯ becomes F | 2 |
| Bsus2 | 1 2 5 | D, A♯ becomes C♯ | 2 |
| Bsus4 | 1 4 5 | D, A♯ becomes E | 2 |
| B7 | 1 3 5 ♭7 | D, A♯ becomes D♯, A | 2 |
| Bm7♭5 | 1 ♭3 ♭5 ♭7 | F♯, A♯ becomes F, A | 2 |

## Set theory

- Absolute pitch classes: {11, 2, 6, 10}
- Relative pitch classes: [0, 3, 7, 11]
- Normal order: [10, 11, 2, 6]
- Prime form: (0148)
- Forte number: 4-19
- Interval vector: <101310>

## Frequencies (close root position)

| Note | MIDI | Frequency |
| --- | --- | --- |
| B3 | 59 | 246.94 Hz |
| D4 | 62 | 293.66 Hz |
| F♯4 | 66 | 369.99 Hz |
| A♯4 | 70 | 466.16 Hz |

## Questions and answers

### What notes are in BmMaj7?

BmMaj7 contains B, D, F♯ and A♯. The formula is 1, ♭3, 5, 7.

### How do you play BmMaj7 on piano?

Play B, D, F♯ and A♯ together. Right hand fingers 1, 2, 3, 5; left hand 5, 3, 2, 1. F♯ and A♯ are black keys; B and D are white.

### What are the inversions of BmMaj7?

4 positions: root position B D F♯ A♯, BmMaj7/D, BmMaj7/F♯, BmMaj7/A♯.

### What is the difference between BmMaj7 and Bm?

Drops A♯. 3 of the notes are shared.

### What is an easy BmMaj7 for small hands?

The close, second inversion voicing, F♯4 A♯4 B4 D5, spans 8 semitones or about 110 mm.

### What are the frequencies of BmMaj7?

From B3 at A440 in 12-TET: 246.94, 293.66, 369.99, 466.16 Hz.

### What is the set class of BmMaj7?

Prime form (0148), Forte 4-19, interval vector &lt;101310&gt;.

### How do I transpose BmMaj7 to another key?

Keep the 1, ♭3, 5, 7 formula on the new root. CmMaj7 is C, E♭, G, B; C♯mMaj7 is C♯, E, G♯, B♯.

### Is C♭mMaj7 the same as BmMaj7?

Enharmonically yes: the same piano keys and the same sound, spelled differently.

## Provenance

Every derived value above is computed by the piano.org theory kernel from the root, the quality and the stated parameters. Nothing is hand-entered per chord.

Machine record: https://piano.org/api/knowledge/v1/entities/chord:minor-major-7th:b
Last reviewed: 2026-08-12