Bb7 is a dominant seventh, spelled Bb, D, F and Ab. In Drop D tuning (D2 A2 D3 G3 B3 E4) the easiest shape is x13131, which sits at fret 1, needs a barre across 5 strings at fret 1 and mutes 1 string. 12 positions for it are shown below, from the nut up to fret 13.
Notes and intervals
Note
Bb
D
F
Ab
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.
x13131sits at fret 1, needs a barre across 5 strings at fret 1 and mutes 1 string886766sits at fret 6 and needs a barre across 4 strings at fret 6053334sits at fret 3, needs a barre across 3 strings at fret 3 and lets 1 string ring open88079xsits at fret 7, spans 2 frets, lets 1 string ring open and mutes 1 string88010910sits at fret 8, needs a barre across 2 strings at fret 8 and lets 1 string ring openx130131113sits at fret 11, spans 2 frets, lets 1 string ring open and mutes 1 string0110101110sits at fret 10, needs a barre across 3 strings at fret 10 and lets 2 strings ring openx1315131513sits at fret 13, needs a barre across 5 strings at fret 13 and mutes 1 string8567xxsits at fret 5, spans 3 frets and mutes 2 stringsx131213xxsits at fret 12, spans 1 fret and mutes 3 stringsxx8764sits at fret 4, spans 4 frets and mutes 2 stringsx13010910sits at fret 9, spans 4 frets, lets 1 string ring open and mutes 1 string
Keys Bb7 belongs to
Bb7 is diatonic to 8 of the 96 keys this app knows, playing a different role in each.