Design various chord structures to improve the overall harmony of the assigned musical composition.
A | BcB AGE | DGG FGA | BAB cBc | def gdc | BcB AGE | 
 DGG FGA | Bcd cAF | AGF G2 :: A | BAB cBc | def g2 d | 
 def gfg | a2 g fdd | dgg b2 g | a2 g fdc | Bcd cAF | AGF G2 :|  
X:1
L:1/8
M:6/8
K:G
 A |"G" BcB"C" AGE |"G" DGG"D7" FGA |"G" BAB"C" cBc |"D7" def"G" gdc |"G" BcB"C" AGE | 
"G" DGG"D7" FGA |"G" Bcd"D7" cAF | AGF"G" G2 :: A |"G" BAB"C" cBc |"D7" def"G" g2 d | 
"D7" def"G" gfg |"Am" a2 g"D7" fdd |"G" dgg b2 g |"Am" a2 g"D7" fdc |"G" Bcd"D7" cAF | AGF"G" G2 :|  