Bbm7 Guitar Chord Lesson
The Bbm7 Guitar Chord (also known as B Flat Minor 7, A#m7) is found in the Bb Major Scale. The Bb Major scale consists of the following notes: Bb C, D, Eb, F, G, and A. In order to find the notes that make up this particular chord, we use the formula: 1, b3, 5, b7. This means that we take the 1st, flattened 3rd, fifth and flattened 7th positions of this scale to make our B Flat Minor 7. This gives us the notes: Bb, Db,F and Ab.
The “flattened 3rd” means that we take the 3rd step of the Bb Major scale and flatten it by 1/2 step giving us our “Db”. The “flattened 7th” means that we take the 7th step of the same scale and flatten it by 1/2 step giving us our “Ab”.
There are 4 advanced voicings of this chord below. To play these chords correctly you will need to understand how to play barre chords and how to mute strings.
Here is a key that will help you read the charts:
Everything on the above chart should be self explanatory, except for the last three in the third column. They may need a bit of explaining. The O, or open symbol, simply means that you do not press down on any notes on that string. The X means you do not strum that particular string. The Barre symbol means you need to barre that particular fret. When you barre a fret you are pressing down on multiple strings at the same time with one finger.