Develop a musical composition in line with the given structure and theme.
X:1
L:1/8
M:4/4
K:Bmin
['fBBA FEFB A2 FB ABde', 'd2 fd adfa bfaf'  
X:1
L:1/8
M:4/4
K:Bmin
|: de | fBBA FEFB | A2 FB ABde | fBBA FEFA | Bd (3cBA Bcde | fBBA FEFB | A2 FB ABde | faaf egfe | 
 dBBA B2 :: Bc | d2 fd adfa | bfaf egfe | d2 fd adfa | bfaf egfe | d2 fd adfa | bfaf e2 de | 
 fBBA FEFA | Bd (3cBA B2 :|  