C is a major, spelled C, E and G. In Drop D tuning (D2 A2 D3 G3 B3 E4) the easiest shape is x32010, which sits at fret 1, spans 2 frets, 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
C
E
G
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.
x32010sits at fret 1, spans 2 frets, lets 2 strings ring open and mutes 1 stringx320xxsits at fret 2, spans 1 fret, lets 1 string ring open and mutes 3 stringsx35050sits at fret 3, spans 2 frets, lets 2 strings ring open and mutes 1 string101010080sits at fret 8, spans 2 frets and lets 2 strings ring openxxx550sits at fret 5, needs a barre across 2 strings at fret 5, lets 1 string ring open and mutes 3 strings1010109xxsits at fret 9, spans 1 fret and mutes 2 strings10710080sits at fret 7, spans 3 frets and lets 2 strings ring openx15140130sits at fret 13, spans 2 frets, lets 2 strings ring open and mutes 1 string1010100130sits at fret 10, needs a barre across 3 strings at fret 10 and lets 2 strings ring openx15140xxsits at fret 14, spans 1 fret, lets 1 string ring open and mutes 3 stringsx151401312sits at fret 12, spans 3 frets, lets 1 string ring open and mutes 1 stringx32013sits at fret 1, spans 2 frets, lets 1 string ring open and mutes 1 string
Keys C belongs to
C is diatonic to 24 of the 96 keys this app knows, playing a different role in each.