Create chord progressions that enrich the harmonic structure of the provided musical piece.
|: G2=Bc d2d2 | d2>f2 _e2dc | z d2f _e2dc | _edc=B c4 :: =Bcd_e dcB_A | =Bcd_e dcB_A | 
 G2>_A2 =B2c2 | =B_AAG G4 :|  
X:1
L:1/16
Q:1/4=60
M:2/4
K:none
|:"G" G2=Bc d2d2 | d2>f2 _e2dc | z d2f _e2dc |"Cm" _edc=B c4 ::"G" =Bcd_e dcB_A | =Bcd_e dcB_A | 
"G" G2>_A2"Fm" =B2c2 | =B_AAG"G" G4 :|  