Create a fitting sequence of chord changes that enhance the given musical piece.
|: [Ec]2 (3GEG c>G E>G | F2 (3AFA c>A F>A | G>B G>B d>B G>B | c>e c>e g>e c>G | 
 E2 (3GEG c>G E>G | F2 (3AFA c>A F>A | G>B d>B G>f d>B | c2 [EGc]2 [EGc]2"^Fine" z2 :: 
 A2 (3cAc e>c A>c | B>e B>^G E>E ^F>G | A2 (3cAc e>c A>c | B>e B>^G E2 e2 | 
 A2 (3cAc e>c A>c | B>e B>^G E2 f2 | (3efe (3ded (3cdc (3BcB |1 
 A2 a2 a2 z2 :|2 A2 z2 [FB]4 ||  
X:1
L:1/8
M:4/4
K:C
|:"C" [Ec]2 (3GEG c>G E>G |"Dm" F2 (3AFA c>A F>A |"G7" G>B G>B d>B G>B |"C" c>e c>e g>e c>G | 
 E2 (3GEG c>G E>G |"Dm" F2 (3AFA c>A F>A |"G7" G>B d>B G>f d>B |"C" c2 [EGc]2 [EGc]2"^Fine" z2 :: 
"Am" A2 (3cAc e>c A>c |"E7" B>e B>^G E>E ^F>G |"Am" A2 (3cAc e>c A>c |"E7" B>e B>^G E2 e2 | 
"Am" A2 (3cAc e>c A>c |"E7" B>e B>^G E2 f2 |"Am" (3efe"E7" (3ded"Am" (3cdc"G7" (3BcB |1 
"Am" A2 a2 a2 z2 :|2"Am" A2 z2"G7" [FB]4 ||  