Construct a harmonic backdrop to enhance the provided melody.
d3 d3 | dcB ABc | dcB ABc | def e2 d | e3 e3 | fed eag | 
 fed BAB | def e2 d :: fdd eAA | fed eAA | gfe fBB | gee fBB | 
 fdd eAA | fed eag | fed BAB | def e2 d :|  
X:1
L:1/8
M:6/8
K:D
"D" d3 d3 |"D" dcB"A" ABc |"D" dcB"A" ABc |"D" def e2 d |"A" e3 e3 |"D" fed"A" eag | 
"D" fed"G" BAB |"A" def e2 d ::"D" fdd"A" eAA |"D" fed"A" eAA |"G" gfe"Bm" fBB |"G" gee"Bm" fBB | 
"D" fdd"A" eAA |"D" fed"A" eag |"D" fed"G" BAB |"A" def e2 d :|  