Create music using the given musical theme and adhere to the outlined letter-based structure.
X:1
L:1/8
M:4/4
K:Gmin
['BDGB AD^FA GDGB dcBA', 'DBEB FBEB DFBd fbfd']  
X:1
L:1/8
M:4/4
K:Gmin
|: dc | BDGB AD^FA | GDGB dcBA | Bdgf edcB | AGFE DcBA | BDGB AD^FA | GDGB dcBA | f=e_ec AG^FA | 
 GBdg G2 :: FE | DBEB FBEB | DFBd fbfd | Ec^Ec FcAc | ecAF E C3 | DBEB FBEB | DFBd fbfd | 
 f=e_ed cBAG | FEDC B,2 :|  