Create chord progressions that enrich the harmonic structure of the provided musical piece.
ef | g^fga- aged | c2 G2 E2 G2 | FEFE DEFG | A G2 ^F G2 ef | g^fga- aged | 
 c2 G2 E2 G2 | FEFd- dc B2 | c4 c2 :: AB | cBAG EGAB | cBAG E3 E | FEFE DEFG | 
 A G2 ^F G2 AB | cBAG EGAB | cBAG E3 E | FEF(d G)dc B2 | c3 c2 :|  
X:1
L:1/8
Q:1/8=220
M:2/2
K:C
 ef |"C" g^fga- aged | c2 G2 E2 G2 |"F" FEFE DEFG |"G" A G2 ^F G2 ef |"C" g^fga- aged | 
 c2 G2 E2 G2 |"F" FEFd-"G" dc B2 |"C" c4 c2 :: AB |"C" cBAG EGAB | cBAG E3 E |"F" FEFE DEFG | 
"G" A G2 ^F G2 AB |"C" cBAG EGAB | cBAG E3 E |"F" FEF(d G)dc B2 |"C" c3 c2 :|  