Ab is a major, spelled Ab, C and Eb. In Standard tuning (E2 A2 D3 G3 B3 E4) the easiest shape is 466544, which sits at fret 4 and needs a barre across 6 strings at fret 4. 12 positions for it are shown below, from the nut up to fret 13.
Notes and intervals
Note
Ab
C
Eb
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.
466544sits at fret 4 and needs a barre across 6 strings at fret 4431114sits at fret 1 and needs a barre across 3 strings at fret 1x665xxsits at fret 5, spans 1 fret and mutes 3 stringsxx6898sits at fret 6, spans 3 frets and mutes 2 strings4365xxsits at fret 3, spans 3 frets and mutes 2 stringsx1113131311sits at fret 11, needs a barre across 5 strings at fret 11 and mutes 1 stringx1110898sits at fret 8, needs a barre across 3 strings at fret 8 and mutes 1 string111110xxxsits at fret 10, spans 1 fret and mutes 3 stringsxx131313xsits at fret 13, needs a barre across 3 strings at fret 13 and mutes 3 stringsx1110139xsits at fret 9, spans 4 frets and mutes 2 stringsxx111xsits at fret 1, needs a barre across 3 strings at fret 1 and mutes 3 strings46654xsits at fret 4, needs a barre across 5 strings at fret 4 and mutes 1 string
Keys Ab belongs to
Ab is diatonic to 24 of the 96 keys this app knows, playing a different role in each.