Develop a musical composition by integrating the alphabetically represented musical pattern and the supplied melodic theme.
X:1
L:1/8
M:4/4
K:D
['DFA<d EAce dfeg fdBd', 'd2 fg afdf Adfa gfge cdec dfba']  
X:1
L:1/8
M:4/4
K:D
|: d2 | DFA<d EAce | dfeg fdBd | ceA=c BGEG | (3GED A,D GECE | DFA<d EAce | dfeg fdBd | cbaf gece | 
 (3ddd f2 d2 :: fg | afdf Adfa | gfge cdec | dfba gfed | (3cdc (3BcB AGFE | DFA<d EAce | 
 dfdg fdBd | cbaf gece | (3ddd f2 d2 :|  