Develop a musical composition using both the specified melodic theme and the alphabetical pattern naming.
X:1
L:1/8
M:4/4
K:Bmin
['Bcde f2 ff', 'ABcd efec d2 B2 dc B2']  
X:1
L:1/8
M:4/4
K:Bmin
 Bcde f2 ff | gfef edcF | Bcde f2 ff | gfef ed c2 | Bcde f2 ff | afef edcF | Bcde f2 ff | 
 gfef ed c2 || f2 fe fd B2 | (3Bcd cB ABcd | efec d2 B2 | dc B2 ABcd | efec d2 B2 | dc B2 AB c2 | 
 (3def ec B2 BB ||  