Design an agreeable chord progression that fits well with the given music piece.
|: ^FG GG | AB AG | G F2 E | ^F/G/ E3 ::[K:Cmin] D_E EE | ^FG F_E | _E D2 C | 
 _ED C2 :: DE ED | D C3 | DE ED | D C3 | DE F_G | _G F3 | GF ED | C4 :: 
 G2 F/E/F/A/ | G2 F/E/F/A/ | G2 F/E/G/F/ | E2 EF | G2 F/G/F/E/ | D/E/ F3 | GF ED | 
 C4 :: =A/B/c B>_A | A G2 F/E/ | D/E/F ED | D C3 | DE F_G | _G F3 | GF ED | 
 C4 :: G2 F/E/F/A/ | G2 F/E/F/A/ | G2 F/E/G/F/ | E2 EF | G2 F/G/F/E/ | D/E/ F3 | 
 GF ED | C4 :: c2 B/=A/B/c/ | =A4 | BB _A/G/A/B/ | G4 | 
 G/A/B/A/ A/G/G/F/ | FF A2 | GG F/=E/F/G/ | =E4 ::[K:C] GF FF | F4 | GG FE/D/ | 
 E/F/ G3 | GF FF | F2 _A2 | GF/E/ _D/C/_B,/D/ | C4 :|  
X:1
L:1/8
M:2/4
K:C
|:"C" ^FG GG | AB AG |"G7" G F2 E |"C" ^F/G/ E3 ::[K:Cmin]"Cm" D_E EE | ^FG F_E |"G7" _E D2 C | 
"Cm" _ED C2 ::"Cm" DE ED | D C3 | DE ED | D C3 | DE F_G |"Fm" _G F3 |"G7" GF ED |"Cm" C4 :: 
"Eb" G2 F/E/F/A/ | G2 F/E/F/A/ | G2 F/E/G/F/ | E2 EF | G2 F/G/F/E/ |"Fm" D/E/ F3 |"G7" GF ED | 
"Cm" C4 ::"Eb" =A/B/c B>_A | A G2 F/E/ |"G7" D/E/F ED |"Cm" D C3 | DE F_G |"Fm" _G F3 |"G7" GF ED | 
"Cm" C4 ::"Eb" G2 F/E/F/A/ | G2 F/E/F/A/ | G2 F/E/G/F/ | E2 EF | G2 F/G/F/E/ |"Fm" D/E/ F3 | 
"G7" GF ED |"Cm" C4 ::"C" c2 B/=A/B/c/ |"F" =A4 |"Bb" BB _A/G/A/B/ |"Eb" G4 | 
"C" G/A/B/A/ A/G/G/F/ |"Fm" FF A2 |"G7" GG F/=E/F/G/ |"C" =E4 ::[K:C]"G7" GF FF | F4 | GG FE/D/ | 
"C" E/F/ G3 |"G7" GF FF |"Fm" F2 _A2 |"Bbm" GF/E/ _D/C/_B,/D/ |"C" C4 :|  