guitar chord
B13
Seven notes in theory and four or five in anyone’s hands: root, third, seventh and thirteenth carry it.
Every fingering that fits a hand
70664x
hard · no 5
x21204
hard · no 5, 9
70644x
hard · no 5, 9
797897
hard · barre · no 9
x24244
hard · barre · no 9
What is true of it
B13 is B, D♯, F♯, A, C♯ and G♯ — 1, 3, 5, b7, 9 and 13 counted from B.
On an instrument that cannot reach all 6, the 5, 9 and 1 go first, in that order.
The easiest of the 5 fingerings below is 70664x: 4 fingers, held at the 4th fret.
None of them uses an open string, so this chord moves up the neck unchanged — the same shape 1 fret higher is the chord a semitone above.
2 of the 5 need a barre.
It leaves out the 5. 6 strings cannot carry 6 notes, and the 5 is the one this chord can lose without changing what it is.
1 string stays silent.
Where its notes are on the neck
The brass dots are B, the root. Everything else is a chord tone with its degree printed in it.
With a different note underneath
B13/D♯
x67604
B13/F♯
201102
B13/A
x01102
An inversion is the same chord with a different note lowest. The name changes to a slash name because the bass is what a listener hears as the foundation.