B major (B) chord on mandolin

The B major chord (B) is a major triad, made of three notes: B – D♯ – F♯.

Dots show:

Basic shapemedium

Position 4medium

Position 7medium

Position 9easy

Tap a string on a diagram to hear just that string. The sound is generated in your browser with a physical string model.

Chord finder Transposer Tuner

What the B chord sounds like

A major triad sounds stable and bright: root, major third and perfect fifth. Most songs are built on major chords – in a major key, chords I, IV and V are all major.

Notes of the B chord

Degree	Note	Interval from the root
1	B	root
3	D♯	major third (4 semitones)
5	F♯	perfect fifth (7 semitones)

How to play it – with fingering

Basic shape

String 1 (E): fret 2, ring finger (F♯5)
String 2 (A): fret 2, middle finger (B4)
String 3 (D): fret 1, index finger (D♯4)
String 4 (G): fret 4, little finger (B3)

Position 4, barre at fret 4

String 1 (E): fret 7, little finger (B5)
String 2 (A): fret 6, ring finger (D♯5)
String 3 (D): fret 4, index finger (F♯4)
String 4 (G): fret 4, index finger (B3)

For the barre, lay your index finger flat across all the marked strings at fret 4; your other fingers press the higher frets.

Position 7

String 1 (E): fret 7, index finger (B5)
String 2 (A): fret 9, little finger (F♯5)
String 3 (D): fret 9, ring finger (B4)
String 4 (G): fret 8, middle finger (D♯4)

Tuning: G D A E, like a violin; every note is a pair of strings that you fret together. In the diagram, × means the string is not played, and a circle means an open string.

Which keys is it in?

The B chord is built from the notes of these keys (for minor keys, both the natural and the harmonic minor are considered):

B major: I (tonic)
E major: V (dominant)
F♯ major: IV (subdominant)
E minor: V (dominant)
C♯ minor: VII
G♯ minor: III
D♯ minor: VI

Similar chords and substitutes

If B is too hard, or you want a different colour in the same spot, these chords are worth a try.

Substitutes (by function)

A♭m – relative minor: two shared notes, a common stand-in for the tonic
E♭m – mediant minor (iii): two shared notes
Bmaj7 – a softer, jazzier tonic colour
Bsus4 – suspended version that resolves back to this chord

Richer versions

B7 – the same chord plus 1 colour note
Bmaj7 – the same chord plus 1 colour note
B6 – the same chord plus 1 colour note
Badd9 – the same chord plus 1 colour note

Frequently asked questions

What notes are in the B chord?

B, D♯, F♯. The root is B; the intervals of the other notes from the root: major third, perfect fifth.

What is the easiest way to play B on mandolin?

The easiest shape above is “Position 9”, rated easy. We show 4 shapes, from open and easy versions to movable barre shapes higher up the neck.

How do I read the chord diagram?

Strings run from the lowest (left) to the highest (right) – tick “Left-handed” to mirror it. Rows are frets; a number at the side shows the starting fret. Dots are fingers (1 index, 2 middle, 3 ring, 4 little), a long bar is a barre, × means don't play that string and ○ means play it open.

Why do some songbooks write H instead of B?

In German and Central European notation, H is the note B, and B is the note B♭. So a “B” chord in a German or Hungarian songbook is B♭ in English notation, and an “H” chord is B. Always check which notation your chord chart uses.