7 Tones in key:               D, E, F, G, A, Bb, C        (i, iidim, IIII, iv, iv, VI, VII)
        3 Primary Chords:          Dm, Gm, Am                    (i, iv, iv)
        3 Secondary Chords:      F, Bb, C                           (III, VI,VII)
        Dominant 7th Chord:      A7                                    (V7)
  Danman says..."Check out the chart"...D natural minor
 

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