B7 is a dominant seventh, spelled B, D#, F# and A. In Ukulele (low G) tuning (G3 C4 E4 A4) the easiest shape is 4320, which sits at fret 2, spans 2 frets and lets 1 string ring open. 12 positions for it are shown below, from the nut up to fret 14.
Notes and intervals
Note
B
D#
F#
A
Interval
1P
3M
5P
7m
12 ways to play it
Ordered by how hard they are to fret, easiest first, one per position on the neck. Fret numbers are relative to the position marked beside each grid.
4320sits at fret 2, spans 2 frets and lets 1 string ring open4656sits at fret 4 and spans 2 frets4350sits at fret 3, spans 2 frets and lets 1 string ring open8670sits at fret 6, spans 2 frets and lets 1 string ring openx11110sits at fret 11, needs a barre across 2 strings at fret 11, lets 1 string ring open and mutes 1 string8979sits at fret 7 and spans 2 frets14151414sits at fret 14 and needs a barre across 4 strings at fret 14811110sits at fret 8, spans 3 frets and lets 1 string ring open2322sits at fret 2 and needs a barre across 4 strings at fret 2435xsits at fret 3, spans 2 frets and mutes 1 string4352sits at fret 2 and spans 3 frets4356sits at fret 3 and spans 3 frets
Keys B7 belongs to
B7 is diatonic to 8 of the 96 keys this app knows, playing a different role in each.