The B Minor 7 Chord is found by locating the 1, b3, 5 , b7 steps of the B Major Scale: B, C#, D#, E, F#, G#, A#, or the notes B, D, F# and A. The “b3” symbol translates to “Flattened 3rd” , which means we simply lower the 3rd step of the B Major Scale (D#) a 1/2 step to a “D”. The “b7” symbol translates to “Flattened 7th” , which means we simply lower the 7th step of the B Major Scale (A#) a 1/2 step to an “A”.
So the notes of the B Minor 7 Chord are: B D F# A.
Here is a key that will help you read the chart:
Chord Playing Tip: Be sure that you are pressing down on the string hard enough. You should play each string one at a time to make sure you have a nice clean sound. If any of the strings buzz or sound muted, then something is not right.
Bm7 Video Demo