Create a fitting sequence of chord changes that enhance the given musical piece.
|: (3EFG | A2 A>c e>c (3ABc | d2 d>f e>c (3ABc | d2 f>d c4 e>c | 
 B>A B>c B>d c>B | A2 A>c e>c (3ABc | d2 d>f e>c A3 | a>g a>f e>d c>B | 
 c2 A2 A2 :: (3efg | a>e c>e f>e c>e | a>e c>e f>e d>c | d2 b>d c2 a>c | 
 B>A B>c B>d c>B | A2 A>c e>c (3ABc | d2 d>f e>c A3 | a>g a>f e>d c>B | 
 c2 A2 A2 :|  
X:1
L:1/8
M:4/4
K:A
|: (3EFG |"A" A2 A>c e>c (3ABc |"D" d2 d>f"A" e>c (3ABc |"D" d2 f>d"A" c4 e>c | 
"Bm" B>A B>c"E7" B>d c>B |"A" A2 A>c e>c (3ABc |"D" d2 d>f"A" e>c A3 |"D" a>g a>f"E7" e>d c>B | 
"A" c2 A2 A2 :: (3efg |"A" a>e c>e f>e c>e | a>e c>e f>e d>c |"Bm" d2 b>d"A" c2 a>c | 
"Bm" B>A B>c"E7" B>d c>B |"A" A2 A>c e>c (3ABc |"D" d2 d>f"A" e>c A3 |"D" a>g a>f"E7" e>d c>B | 
"A" c2 A2 A2 :|  