7 Tones in key:               A, B, C, D, E, F, G      (i, iidim, IIII, iv, iv, VI, VII)
        3 Primary Chords:          Am, Dm, Em                (i, iv, v)
        3 Secondary Chords:      C, F, G                         ( III, VI, VII)
        Dominant 7th Chord:      E7                                 (V7)
  Danman says..."Check out the chart"...A natural minor
 

Scale Step	Root	3rd	5th	Chord Type
I	A	C	E	Minor
II	B	D	F	Diminished
III	C	E	G	Major
IV	D	F	A	Minor
V	E	G	B	Minor
VI	F	A	C	Major
VII	G	B	D	Major