Construct harmonious chord structures to elevate the given musical piece.
|: cBAB cBAc | e2>e2 e2dc | B2Bc dded | c2A2 A4 :: e2ce ggfe | d2de f2ed | 
 B2Bc d2ed | c2A2 A4 :|  
X:1
L:1/16
M:2/4
K:Amin
|:"Am" cBAB cBAc |"C" e2>e2 e2dc |"E7" B2Bc dded |"Am" c2A2 A4 ::"C" e2ce ggfe |"G7" d2de f2ed | 
"E7" B2Bc d2ed |"Am" c2A2 A4 :|  