Craft a composition that integrates the assigned alphabet-related musical pattern and the provided melodic theme.
X:1
L:1/8
M:2/2
K:Bmin
['(3B,CD FB', 'dBB^g aABc def^g aAed cAA^a bBcd ef^g^a']  
X:1
L:1/8
M:2/2
K:Bmin
 (3B,CD FB DBFd | BFFE DB,B,D |1 (3B,CD FB DBFB | AEED CA,A,C :|2 (3B,CD FB cAce | aAed cAA^a || 
 bBcd ef^g^a | bBfe dBB^g | aABc def^g | aAed cAA^a | bBcd ef^g^a | bBfe dBBc | (3def af b^gaf | 
 ecae cAAc ||  