Fbmaj7 is a major seventh, spelled Fb, Ab, Cb and Eb. In Open G tuning (D2 G2 D3 G3 B3 D4) the easiest shape is 211102, which sits at fret 1, needs a barre across 3 strings at fret 1 and lets 1 string ring open. 12 positions for it are shown below, from the nut up to fret 13.
Notes and intervals
Note
Fb
Ab
Cb
Eb
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.
211102sits at fret 1, needs a barre across 3 strings at fret 1 and lets 1 string ring openx9989xsits at fret 8, spans 1 fret and mutes 2 strings14131313014sits at fret 13, needs a barre across 3 strings at fret 13 and lets 1 string ring openx96809sits at fret 6, spans 3 frets, lets 1 string ring open and mutes 1 stringxx2446sits at fret 2, spans 4 frets and mutes 2 stringsxx14131213sits at fret 12, spans 2 frets and mutes 2 stringsx999913sits at fret 9, needs a barre across 4 strings at fret 9 and mutes 1 stringxx6856sits at fret 5, spans 3 frets and mutes 2 stringsx4685xsits at fret 4, spans 4 frets and mutes 2 strings21110xsits at fret 1, needs a barre across 3 strings at fret 1, lets 1 string ring open and mutes 1 stringxx2101sits at fret 1, spans 1 fret, lets 1 string ring open and mutes 2 strings111102sits at fret 1, needs a barre across 4 strings at fret 1 and lets 1 string ring open
Keys Fbmaj7 belongs to
Fbmaj7 is diatonic to 16 of the 96 keys this app knows, playing a different role in each.