Am7 is a minor seventh, spelled A, C, E and G. In Open G tuning (D2 G2 D3 G3 B3 D4) the easiest shape is x22012, which sits at fret 1, spans 1 fret, lets 1 string ring open and mutes 1 string. 12 positions for it are shown below, from the nut up to fret 13.
Notes and intervals
Note
A
C
E
G
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.
x22012sits at fret 1, spans 1 fret, lets 1 string ring open and mutes 1 string705555sits at fret 5, needs a barre across 4 strings at fret 5 and lets 1 string ring openx22555sits at fret 2, needs a barre across 2 strings at fret 2 and mutes 1 stringx141401314sits at fret 13, spans 1 fret, lets 1 string ring open and mutes 1 string7970810sits at fret 7, needs a barre across 3 strings at fret 7 and lets 1 string ring openx01091010sits at fret 9, spans 1 fret, lets 1 string ring open and mutes 1 stringx14141213xsits at fret 12, spans 2 frets and mutes 2 strings1001001010sits at fret 10, needs no stretch at all and lets 2 strings ring openx2201xsits at fret 1, spans 1 fret, lets 1 string ring open and mutes 2 strings755555sits at fret 5 and needs a barre across 5 strings at fret 5x02212sits at fret 1, spans 1 fret, lets 1 string ring open and mutes 1 string20221xsits at fret 1, spans 1 fret, lets 1 string ring open and mutes 1 string
Keys Am7 belongs to
Am7 is diatonic to 24 of the 96 keys this app knows, playing a different role in each.