Develop a musical composition using both the specified melodic theme and the alphabetical pattern naming.
X:1
L:1/8
M:6/8
K:Bmin
['GFE FBd', 'fBd g3', 'B2 F', 'FGB e6 :|2 FED FGB cAG (B3']  
X:1
L:1/8
M:6/8
K:Bmin
 FBd cBF | DEF GFE | FBd GBd | a3 gfe | f3 FBd | cBA GFE |1 GFE FBd | cBA BFE :|2 GFE FBd | 
 edc B3 |: fBd g3 | fBd g3 | fba fed | fee ede | fBd g3 | fBd g3 |1 fed cBA | Fdc Bce :|2 fed ABd | 
 cf^a b3 |: F2 D F3 | DEF GAB | dBF dBG | Ace gfe | fBd cBF | DEF GFE |1 F3 DEF | ABc B2 G :|2 
 F3 DEF | ABc d3 |: B2 F B2 F | A2 B G3 | FBc fed | GBd f3 | B2 F B2 F | A2 B G3 |1 F2 D FGB | 
 e6 :|2 FED FGB | cAG (B3 | B4) z2 ||  