Bm7 chord on piano
Bm7 (B minor 7th) is a minor 7th chord built on B. It has 4 notes, B, D, F♯ and A, and its formula is 1 ♭3 5 ♭7.
Notes and intervals of Bm7
From the root upwards, Bm7 contains root (B), minor 3rd (D), perfect 5th (F♯) and minor 7th (A). Those intervals give the chord its colour: the formula 1 ♭3 5 ♭7 works the same way in every key, so once you know it for B you can build the chord on any note.
| Degree | Interval | Note |
|---|---|---|
| 1 | root | B |
| ♭3 | minor 3rd | D |
| 5 | perfect 5th | F♯ |
| ♭7 | minor 7th | A |
How to play Bm7 on piano
Find B and play B, D, F♯ and A together. With the right hand, a common fingering is 1-2-3-5. With the left hand, reverse it (5-3-2-1). Keep your wrist level and let the fingers curve, so all 4 keys go down at the same time.
Inversions of Bm7
An inversion keeps the same notes but puts another one in the bass. Bm7 has 3 inversions besides root position: 1st inversion (D F♯ A B), 2nd inversion (F♯ A B D) and 3rd inversion (A B D F♯). Inversions let you move between chords with tiny hand movements, which is how pianists make progressions sound smooth.
Which keys use Bm7?
You find Bm7 as a diatonic chord in D major (vi7), A major (ii7) and G major (iii7). The most common case is D major, where it plays the role of vi7.
Scales to play over Bm7
To improvise over Bm7, start with B natural minor scale. All of these scales contain every note of the chord: B natural minor scale, B minor pentatonic scale, B blues scale, B Dorian mode and B Phrygian mode. Aim for the chord notes on strong beats and use the other notes to move between them.
About minor 7th chords
A minor triad plus a minor seventh: 1 ♭3 5 ♭7. Softer and more open than a plain minor chord, the minor seventh is mellow, slightly melancholic and has no urge to resolve. It contains a major triad on its ♭3, which is why it sounds warm rather than dark. For example Am7: A C E G, with C E G inside.
It sits naturally on ii, iii and vi of a major key, and on i, iv and v of the natural minor. Its star role is the ii7 of the ii-V-I: ii7 V7 Imaj7 (for example Dm7 G7 Cmaj7). Funk and soul vamp on one m7 for minutes, and pop uses vi7 and ii7 to soften plain triads.
Root position 1 ♭3 5 ♭7 works fine, but jazz pianists often play the root and ♭7 in the left hand and the ♭3 and 5 (or ♭3, 5, 9) in the right. In ii7 V7 I, voice-lead: the ♭3 of ii7 stays as the ♭7 of V7, and the ♭7 of ii7 slides down a semitone to the 3 of V7.
m7 is not m(maj7): Am7 has G, Am(maj7) has G♯. Do not confuse it with m7♭5 either: lower the fifth and you get a half-diminished chord with a much tenser role. Finally, a m7 chord has the same four notes as the 6 chord on its ♭3 (Am7 and C6): the bass note decides which one you hear.
Frequently asked questions
What notes are in the Bm7 chord?
Bm7 (B minor 7th) contains B, D, F♯ and A. In intervals: root (B), minor 3rd (D), perfect 5th (F♯) and minor 7th (A).
How do you play Bm7 on piano?
Play B, D, F♯ and A together with the right-hand fingering 1-2-3-5. You can also play it in 3 inversions, shown on this page.
What scale goes with Bm7?
B natural minor scale fits Bm7 best. Other scales that contain all its notes: B minor pentatonic scale, B blues scale, B Dorian mode and B Phrygian mode.
What key is Bm7 in?
Bm7 belongs to D major (vi7), A major (ii7) and G major (iii7). In D major it is the vi7 chord.
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