Construct a harmonic backdrop to enhance the provided melody.
d |: BcdB G2 gf | edef gedc | BcdB G2 Bd | cBAG F2 D2 | BcdB G2 gf | 
 edef gdef | gfge dedc | BGAF G2 d2 :: gfga b2 b2 | abag f2 d2 | 
 edef gdBd | cBAG F2 D2 | GFGB AGAc | BGBd edef | gfge dedc | 
 BGAF G2 z2 :|  
X:1
L:1/8
M:2/2
K:G
 d |:"G" BcdB G2 gf |"C" edef gedc |"G" BcdB G2 Bd |"D" cBAG F2 D2 |"G" BcdB G2 gf | 
"C" edef"G" gdef |"C" gfge"G" dedc |"D" BGAF"G" G2 d2 ::"G" gfga b2 b2 |"D" abag f2 d2 | 
"C" edef"G" gdBd |"D" cBAG F2 D2 |"G" GFGB"D" AGAc |"G" BGBd"C" edef | gfge"G" dedc | 
"D" BGAF"G" G2 z2 :|  