Design chord combinations to enhance the harmony of the given musical composition.
D | DFA B2 A | def gfe | fdf ecA | BGB AFD | DFA B2 A | def gfe | 
 fdf ecA | Add d2 :: g | fad fad | faa agf | eg=c eg=c | efg gfe | fef gfg | 
 agf efg | fed =cAG | Add d2 :|  
X:1
L:1/8
M:6/8
K:D
 D |"D" DFA"G" B2 A |"D" def"A" gfe |"D" fdf"A" ecA |"G" BGB"D" AFD | DFA"G" B2 A |"D" def"A" gfe | 
"D" fdf"A" ecA |"D" Add d2 :: g |"D" fad fad | faa agf |"C" eg=c eg=c | efg gfe |"D" fef"G" gfg | 
"D" agf"A" efg |"D" fed"A" =cAG |"D" Add d2 :|  