Construct congruent chords that enhance the existing musical piece.
DG- GG | ^F>E D2 | DA- AA | B>A G2 | DG- GG | ^F>E D2 | dc BA | G4 |]: 
 Gd- dd | e>d c2 | ce- ee | d>B d2 | Bd- dd | c>B A2 | dc BA | G4 :| 
[K:A] A z c z | B3 G | AB cd | B>A G2 | A z c z | B3 G | dc EF | G4 |]: 
 ce- eg- | gd- dB | dc Ac | ed B2 | ce- eg- | gd- dB | dc EF | G4 :|  
X:1
L:1/8
M:2/4
K:Gmin
"Gm" DG- GG |"D7" ^F>E D2 | DA- AA |"Gm" B>A G2 |"Gm" DG- GG |"D7" ^F>E D2 | dc BA |"Gm" G4 |]: 
"Gm" Gd- dd |"Cm" e>d c2 |"F7" ce- ee |"B" d>B d2 |"Gm" Bd- dd |"D7" c>B A2 | dc BA |"Gm" G4 :| 
[K:A]"D7" A z c z |"G" B3 G |"D7" AB cd |"G" B>A G2 |"D7" A z c z |"G" B3 G |"D7" dc EF |"G" G4 |]: 
"C" ce- eg- |"G" gd- dB |"D7" dc Ac |"G" ed B2 |"C" ce- eg- |"G" gd- dB |"D7" dc EF |"G" G4 :|  