A is a major, spelled A, C# and E. In Drop D tuning (D2 A2 D3 G3 B3 E4) the easiest shape is x02220, which sits at fret 2, needs a barre across 3 strings at fret 2, 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
A
C#
E
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.
x02220sits at fret 2, needs a barre across 3 strings at fret 2, lets 2 strings ring open and mutes 1 string707650sits at fret 5, spans 2 frets and lets 2 strings ring open7776xxsits at fret 6, spans 1 fret and mutes 2 stringsx0119100sits at fret 9, spans 2 frets, lets 2 strings ring open and mutes 1 stringx01414140sits at fret 14, needs a barre across 3 strings at fret 14, lets 2 strings ring open and mutes 1 string7779109sits at fret 7 and needs a barre across 3 strings at fret 7x014141412sits at fret 12, spans 2 frets, lets 1 string ring open and mutes 1 stringx47650sits at fret 4, spans 3 frets, lets 1 string ring open and mutes 1 stringx01114140sits at fret 11, spans 3 frets, lets 2 strings ring open and mutes 1 stringx01114100sits at fret 10, spans 4 frets, lets 2 strings ring open and mutes 1 stringx0222xsits at fret 2, needs a barre across 3 strings at fret 2, lets 1 string ring open and mutes 2 stringsxxx220sits at fret 2, needs a barre across 2 strings at fret 2, lets 1 string ring open and mutes 3 strings
Keys A belongs to
A is diatonic to 24 of the 96 keys this app knows, playing a different role in each.