Develop a musical composition by integrating the alphabetically represented musical pattern and the supplied melodic theme.
X:1
L:1/8
M:2/2
K:D
['dcdf ecAc', 'edef gfed c2 A2 A2']  
X:1
L:1/8
M:2/2
K:D
 A2 | dcdf ecAc | dcdf ecAc | dcde fdaf | bged cABc | dcdf ecAc | dcdf ecAc | dfaf bgec | 
 d2 d2 d2 :: cd | edef gfed | c2 A2 A2 Bc | dcde f2 ed | a4 f2 d2 | edef gfed | c2 A2 A2 (3ABc | 
 dcdf ecAc | d2 d2 d2 :|  