Design various chord structures to improve the overall harmony of the assigned musical composition.
d3 A2 d | B>AA d>BA | d3 A2 d | B>AA a>ef | d3 A2 d | B>AA d>BA | 
 g2 f e>fd | c>AA a>ef :: d3 f2 d | a>ef dBA | d3 f2 d | a>Aa f>ef | 
 d3 f2 d | a>ef dBA | g2 f e>fd | c>AA a>ef :: d3 G>BA | d>Bd e>cA | 
 d3 G>BB | A>ce a>ef | d3 G>BA | d>Bd e>cA | g2 f e>fd | 
 c>AA a>ef :| d3 a2 f | d>fd e>cA | d3 a2 f | d>fd a>ef | d3 a2 f | 
 d>fd e>cA | g2 f e>fd | c>AA a>ef | d3 a2 f | d>fd e>cA | d3 a2 f | 
 d>fd a>ef | g>fg e>fd | G>Bd e>cA | g2 f e>fd | c>AA a>ef ||  
X:1
L:1/8
M:6/8
K:D
"D" d3 A2 d |"G" B>AA"A" d>BA |"D" d3 A2 d |"G" B>AA"A" a>ef |"D" d3 A2 d |"G" B>AA"A" d>BA | 
"G" g2 f"Em" e>fd |"A" c>AA a>ef ::"D" d3 f2 d |"D" a>ef"G" dBA |"D" d3 f2 d |"D" a>Aa"A" f>ef | 
"D" d3 f2 d |"D" a>ef"G" dBA |"G" g2 f"Em" e>fd |"A" c>AA a>ef ::"D" d3"G" G>BA |"D" d>Bd"A" e>cA | 
"D" d3"G" G>BB |"A" A>ce a>ef |"D" d3"G" G>BA |"D" d>Bd"A" e>cA |"G" g2 f"Em" e>fd | 
"A" c>AA a>ef :|"D" d3 a2 f |"D" d>fd"A" e>cA |"D" d3 a2 f |"D" d>fd"A" a>ef |"D" d3 a2 f | 
"D" d>fd"A" e>cA |"G" g2 f"Em" e>fd |"A" c>AA a>ef |"D" d3 a2 f |"D" d>fd"A" e>cA |"D" d3 a2 f | 
"D" d>fd"A" a>ef |"G" g>fg"Em" e>fd |"G" G>Bd"A" e>cA |"G" g2 f"Em" e>fd |"A" c>AA a>ef ||  