Develop chord sequences that enhance the given musical composition.
e2 |: f2 a2 gf e2 | de dB A2 e2 | f2 a2 gf e2 | d2 dc d2 e2 | 
 f2 a2 gf e2 | de dB A2 B2 | =c3 c B2 A2 | G4 G2 FG :: A2 AF B2 BG | 
 AB AG FD FG | A2 d2 cd e2 | [df]2 [df][df] [df]2 FG | [FA]2 AF [GB]2 BG | 
 [FA]B AG FD FG | AB AG F2 E2 | D4 D2 :|  
X:1
L:1/8
M:4/4
K:D
 e2 |:"D" f2 a2"A" gf e2 |"D" de dB A2 e2 |"D" f2 a2"A" gf e2 |"D" d2 dc d2 e2 | 
"D" f2 a2"A" gf e2 |"D" de dB A2 B2 |"C" =c3 c B2 A2 |"G" G4 G2 FG ::"D" A2 AF"G" B2 BG | 
"D" AB AG FD FG |"D" A2 d2"A" cd e2 |"D" [df]2 [df][df] [df]2 FG |"D" [FA]2 AF"G" [GB]2 BG | 
"D" [FA]B AG FD FG |"A" AB AG F2 E2 |"D" D4 D2 :|  