Here are some interesting facts about the common B7 chord on a guitar.
The B7 chord is the symbol used for the B minor seventh chord, according to music theory.
This B7 is a thee note diatonic chord, also known as a tetrad, which is formed as part of the harmonic field of the E minor or E major scale.
In the E minor key, this chord if the fifth chord of the harmonic field, based on the dominant. For this reason, this chord is also known as a chord of dominant function.
In the E major key, this is also the 5th chord, or dominant, when using the harmonic minor scale.
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Configurations of the B7 Chord
Depending on the hand position on the guitar neck, the B7 guitar chord can be used in many positions, as we’ll see in the diagrams below.
The first and most common position is the next one, with root on the 5th string:
Another possibility for this chord is still with the root on the 5th string, but now using a barre chord:
Also, another position that is frequently used for this chord is with the key note in the 6th string, 7th fret:
The B7 chord is very common in pop music and rock, and because of this you can find it in many songs. To improve your skills, you should learn to use the B7 chord in several contexts, also trying to understand the way in which it can be applied in different keys.
For example, in the E minor key, the B7 chord is the dominant chord.
In the E major key, the B7 is also the dominant chord.
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