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The B Chord – How to build it on Guitar, Ukulele and Piano

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:

B chord pentagram staff stave

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):

B7 chord pentagram staff stave

B Major Chord

The A major chord is defined by the following notes:

  • B: root (1).
  • D#:major third (3).
  • F#: perfect fifth (5).
B chord pentagram staff stave

Which presents the following diagram on the guitar:

B major guitar chord

Ukulele

B ukulele

Piano

B piano chord

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).
Bm chord pentagram staff stave

Which presents the following diagram on the guitar:

B minor guitar chord

Ukulele

Bm ukulele

Piano

Bm piano chord

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).
Bmaj7 chord pentagram staff stave

Which presents the following diagram on the guitar:

Bmaj7 guitar chord

Ukulele

Bmaj7 ukulele

Piano

Bmaj7 piano chord

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).
B7 chord pentagram staff stave

Which presents the following diagram on the guitar:

B7 guitar chord

Ukulele

b7 ukulele

Piano

B7 piano chord

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).
bm7 chord pentagram staff stave

Which presents the following diagram on the guitar:

Bm7 guitar chord

Ukulele

bm7 ukulele

Piano

Bm7 piano chord