Build a series of chord progressions that fit well with the existing melody.
D(FA) d2 A | D(FA) B2 A | D(FA) d(fe) | d(BA) G(FE) | 
 D(FA) d2 A | D(FA) B2 A | dB(c A)(GF) | (ED)^C D3 :: 
 ad(a g)cg | fB(f e)Ae | dcd e(fg) | a(gf e3) | dG(d c)Fc | 
 B_E(B A)DA | dB(c A)(GF) | (ED)^C D3 :|  
X:1
L:1/8
Q:1/2=112
M:6/8
K:Dmin
"Dm" D(FA)"Dm/A" d2 A |"Dm" D(FA)"Bb" B2 A |"Dm" D(FA)"Dm/F" d(fe) | d(BA)"C" G(FE) | 
"Dm" D(FA)"Dm/A" d2 A |"Dm" D(FA)"Bb" B2 A | dB(c"Dm" A)(GF) |"A" (ED)^C"Dm" D3 :: 
"Dm" ad(a"C" g)cg |"Bb" fB(f"Am" e)Ae |"Dm" dcd"C" e(fg) |"Dm" a(gf"Am" e3) |"Gm" dG(d"F" c)Fc | 
"Eb" B_E(B"Dm" A)DA |"Bb" dB(c"Dm" A)(GF) |"A" (ED)^C"Dm" D3 :|  