Piano triad chords in the key of A minor (based on the A natural minor scale). The A min scale is A, B, C, D, E, F, G, A. Chord pattern for minor key is minor, diminished, major, minor, minor, major, major. Chords are in the key of Am are A minor, B diminished C major, D minor, E minor, F major and G major. Chords I, ii, iii, IV, V, vi and vii in the key of A minor on piano. | Piano-Keyboard-Guide.com