Última actualización el 23 de June de 2022 por Sergio J. C.
In this article I will explain how to build and play the B chord in all its variations and instruments (guitar, ukulele and piano) in a very simple way.
B chord [Musical explanation]
🙏 Before we dive into how to build the B chord on guitar, let me ask you for 2 minutes to explain to you the theory behind it:

First of all, the B triad chord, like any other chord, can be major or minor.
Likewise, if we add its seventh we would obtain the B seventh chord (tetrad):

B Major Chord
The A major chord is defined by the following notes:
- B: root (1).
- D#:major third (3).
- F#: perfect fifth (5).

Which presents the following diagram on the guitar:

Ukulele

Piano

B Minor Chord (Bm)
The B minor chord is defined by the following notes:
- B: root (1).
- D: minor third (♭3).
- F#: perfect fifth (5).

Which presents the following diagram on the guitar:

Ukulele

Piano

B Major Seventh Chord (Bmaj7)
The C major 7th chord is defined by the following notes:
- B: root (1).
- D#: major third (3).
- F#: perfect fifth (5).
- A#: major séptima (7).

Which presents the following diagram on the guitar:

Ukulele

Piano

B Dominant Seventh Chord (B7)
The B dominant 7th chord is defined by the following notes:
- B: root (1).
- D#: major third (3).
- F#: perfect fifth (5).
- A: major séptima (♭7).

Which presents the following diagram on the guitar:

Ukulele

Piano

B Minor Seventh Chord (Bm7)
The B minor 7th chord is defined by the following notes:
- B: root (1).
- D: minor third (♭3).
- F#: perfect fifth (5).
- F#: minor séptima (♭7).

Which presents the following diagram on the guitar:

Ukulele

Piano


I love learning to play guitar, music theory and music in general. I never get tired of learning and trying to keep improving every day, step by step.
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