Cbm7 is a minor seventh, spelled Cb, Ebb, Gb and Bbb. In Drop D tuning (D2 A2 D3 G3 B3 E4) the easiest shape is x20202, which sits at fret 2, needs no stretch at all, lets 2 strings ring open and mutes 1 string. 12 positions for it are shown below, from the nut up to fret 14.
Notes and intervals
Note
Cb
Ebb
Gb
Bbb
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.
x20202sits at fret 2, needs no stretch at all, lets 2 strings ring open and mutes 1 string004405sits at fret 4, needs a barre across 2 strings at fret 4 and lets 3 strings ring open00443xsits at fret 3, spans 1 fret, lets 2 strings ring open and mutes 1 string900777sits at fret 7, needs a barre across 3 strings at fret 7 and lets 2 strings ring open90011010sits at fret 9, spans 2 frets and lets 3 strings ring open00011010sits at fret 10, spans 1 fret and lets 4 strings ring open000705sits at fret 5, spans 2 frets and lets 4 strings ring open000110xsits at fret 11, needs no stretch at all, lets 4 strings ring open and mutes 1 stringx14014014sits at fret 14, needs no stretch at all, lets 2 strings ring open and mutes 1 stringx140141214sits at fret 12, spans 2 frets, lets 1 string ring open and mutes 1 stringx20232sits at fret 2, spans 1 fret, lets 1 string ring open and mutes 1 string000202sits at fret 2, needs no stretch at all and lets 4 strings ring open
Keys Cbm7 belongs to
Cbm7 is diatonic to 24 of the 96 keys this app knows, playing a different role in each.