Bb is a major, spelled Bb, D and F. In Open G tuning (D2 G2 D3 G3 B3 D4) the easiest shape is x33330, which sits at fret 3, needs a barre across 4 strings at fret 3, lets 1 string ring open and mutes 1 string. 12 positions for it are shown below, from the nut up to fret 15.
Notes and intervals
Note
Bb
D
F
Interval
1P
3M
5P
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.
x33330sits at fret 3, needs a barre across 4 strings at fret 3, lets 1 string ring open and mutes 1 string870760sits at fret 6, spans 2 frets and lets 2 strings ring open810010xxsits at fret 8, spans 2 frets, lets 1 string ring open and mutes 2 strings870xxxsits at fret 7, spans 1 fret, lets 1 string ring open and mutes 3 stringsx151515150sits at fret 15, needs a barre across 4 strings at fret 15, lets 1 string ring open and mutes 1 string010010110sits at fret 10, spans 1 fret and lets 3 strings ring openx150151512sits at fret 12, spans 3 frets, lets 1 string ring open and mutes 1 stringx150151115sits at fret 11, spans 4 frets, lets 1 string ring open and mutes 1 stringx33333sits at fret 3, needs a barre across 5 strings at fret 3 and mutes 1 stringx3333xsits at fret 3, needs a barre across 4 strings at fret 3 and mutes 2 stringsx30333sits at fret 3, needs no stretch at all, lets 1 string ring open and mutes 1 string033330sits at fret 3, needs a barre across 4 strings at fret 3 and lets 2 strings ring open
Keys Bb belongs to
Bb is diatonic to 24 of the 96 keys this app knows, playing a different role in each.