guitar chord
B7
Major triad, minor seventh. The chord that wants to resolve a fourth up.
Every fingering that fits a hand
x21202
moderate
x2120x
open · no 5
797877
moderate · barre
x24242
moderate · barre
70444x
hard
What is true of it
B7 is B, D♯, F♯ and A — 1, 3, 5 and b7 counted from B.
On an instrument that cannot reach all 4, the 5 goes first, in that order.
The easiest of the 5 fingerings below is x21202: 4 fingers, held at the 1st fret.
1 of them use open strings, which is what makes a shape quiet to change to.
2 of the 5 need a barre.
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
B7/D♯
xx1202
B7/F♯
201202
B7/A
x01202
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.