Develop a musical composition using the outlined alphabetical depiction of the structure and the provided theme.
X:1
L:1/8
M:6/8
K:Bmin
['FBB Bcd cff f2 e', 'dcB ^ABc']  
X:1
L:1/8
M:6/8
K:Bmin
|: F | FBB Bcd | cff f2 e | dBB Bcd | cAF F2 E | FBB Bcd | cff f2 e | dcB ^ABc |1 B3 B2 :|2 
 B3 ABc |: d3 dcB | caa a2 ^a | bfe dcB | ^ABc F^G^A | B2 B cBc | def gfe | dcB ^ABc |1 B3 ABc :|2 
 B3 B2 ||  