Gbmaj7 is a major seventh, spelled Gb, Bb, Db and F. In Open G tuning (D2 G2 D3 G3 B3 D4) the easiest shape is xx4323, which sits at fret 2, spans 2 frets and mutes 2 strings. 12 positions for it are shown below, from the nut up to fret 11.
Notes and intervals
Note
Gb
Bb
Db
F
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.
xx4323sits at fret 2, spans 2 frets and mutes 2 strings4333xxsits at fret 3, needs a barre across 3 strings at fret 3 and mutes 2 stringsx11111011xsits at fret 10, spans 1 fret and mutes 2 stringsxx4668sits at fret 4, spans 4 frets and mutes 2 stringsx11810118sits at fret 8, needs a barre across 4 strings at fret 8 and mutes 1 stringx1111111115sits at fret 11, needs a barre across 4 strings at fret 11 and mutes 1 stringxx81078sits at fret 7, spans 3 frets and mutes 2 stringsx68107xsits at fret 6, spans 4 frets and mutes 2 strings433663sits at fret 3 and needs a barre across 5 strings at fret 3463363sits at fret 3 and needs a barre across 4 strings at fret 3433xxxsits at fret 3, needs a barre across 2 strings at fret 3 and mutes 3 strings43366xsits at fret 3, needs a barre across 2 strings at fret 3 and mutes 1 string
Keys Gbmaj7 belongs to
Gbmaj7 is diatonic to 16 of the 96 keys this app knows, playing a different role in each.