Build a series of chord progressions that fit well with the existing melody.
GF |: EF GA BA GF | EF GA B2 FE | DE FG AB AG | F2 D2 D2 GF | EF GA BA GF | 
 EF GA B2 GA | B2 GB (3ABA FA |1 G2 E2 E2 GF :|2 G2 E2 E2 Bd |: ef ed Be dB | 
 AB AG FG Ac | BE ED EF G2 | FG FE D2 Bd | ef ed Be dB | AB AG FG Ac | 
 BA GB AG FA |1 G2 (3EGE E2 Bd :|2 G2 (3EGE E2 ||  
X:1
L:1/8
M:4/4
K:Emin
 GF |:"Em" EF GA BA GF | EF GA B2"D" FE | DE FG AB AG |"D" F2 D2 D2"Em" GF |"Em" EF GA BA GF | 
 EF GA"G" B2 GA | B2 GB"D" (3ABA FA |1 G2 E2 E2 GF :|2 G2 E2 E2 Bd |:"Em" ef ed Be dB | 
"D" AB AG FG Ac |"Em" BE ED EF G2 |"D" FG FE D2 Bd | ef ed Be dB |"D" AB AG FG Ac | 
"G" BA GB"D" AG FA |1 G2 (3EGE E2 Bd :|2 G2 (3EGE E2 ||  