Create a series of chord progressions to improve the harmonic structure of the given music piece.
|: Adfd e2 ce | fdfd g2 eg | fdfd e2 ce | d2 ed cA A2 :: fgaf gagf | 
 e{d}=cgc ecgc | fgaf gece | d2 ed cA A2 :|  
X:1
L:1/8
M:2/2
K:D
|:"D" Adfd"A7" e2 ce |"D" fdfd"G" g2 eg |"D" fdfd"A7" e2 ce |"G" d2 ed"A7" cA A2 ::"D" fgaf gagf | 
"C" e{d}=cgc ecgc |"D" fgaf"A7" gece |"G" d2 ed"A7" cA A2 :|  