semicord

Bm7 B minor seventh chord

Notes
B D F# A
Formula
1 b3 5 b7
Semitones
0 3 7 10 above the root
Other symbols
Bmin7, B−7

B to D is a minor third (3 semitones), D to F# is a major third (4 semitones), F# to A is a minor third (3 semitones). A minor triad plus a minor seventh (A). With D in the bass the same four notes are read as D6.

Bm7 on the piano

C4D4E4F4G4A4B4C5D5E5F5G5A5B5C#4Eb4F#4Ab4Bb4C#5Eb5F#5Ab5Bb5C4BC5DF#A

Root position from B4: B4, D5, F#5, A5. Middle C is C4.

Bm7 on the guitar

Standard tuning (E A D G B E). Strings run low E on the left to high e on the right, frets downwards; × is a muted string, ○ an open string, and each dot shows the note it sounds, with the root in blue-green. Every shape below has B as its lowest note.

×BBF#F#AADDF#F#
A-shape barre, root on the A string at fret 2
x 2 4 2 3 2 (low E to high e)
Sounds B2 F#3 A3 D4 F#4
7frBBF#F#AADDF#F#BB
E-shape barre, root on the E string at fret 7
7 9 7 7 7 7 (low E to high e)
Sounds B2 F#3 A3 D4 F#4 B4

The barre shapes are movable: an E-shape chord's root is the note under your first finger on the low E string, an A-shape chord's root is the note on the A string. Slide the same grip up or down to play minor seventh chords on other roots.

Inversions of Bm7

An inversion puts a note other than the root in the bass. The name is what semicord's chord finder calls those notes played bottom to top; a slash name like C/E means a C chord with E in the bass.

PositionNotes, bass firstNamedListen
Root positionB D F# ABm7
1st inversionD F# A BD6 (also read as Bm7/D)
2nd inversionF# A B DBm7/F#
3rd inversionA B D F#Bm7/A

Where Bm7 fits

Bm7 is ii7 in A major, iii7 in G major, vi7 in D major. As ii7 it is the first chord of the ii–V–I that ends countless jazz and pop phrases: Bm7 → E7 → Amaj7.