Create a series of chord progressions to improve the harmonic structure of the given music piece.
FG | A2 F AGF | B2 G Bcd | AFA dAF | EFE EFG | A2 F AGF | B2 G Bcd | 
 AFA dAF | EFE D :: FG | AFA fed | cBA GAB | AFA dAF | EFE EFG | 
 AFA fed | cBA GAB | AFA dAF | EFE D :|  
X:1
L:1/8
M:6/8
K:D
 FG |"D" A2 F AGF |"G" B2 G Bcd |"D" AFA dAF |"A" EFE EFG |"D" A2 F AGF |"G" B2 G Bcd | 
"D" AFA dAF |"A" EFE"D" D :: FG |"D" AFA fed |"A/G" cBA"G" GAB |"D" AFA dAF |"A" EFE EFG | 
"D" AFA fed |"A/G" cBA"G" GAB |"D" AFA dAF |"A" EFE"D" D :|  