Create a composition by utilizing the given alphabet-based musical pattern and the provided melodic theme.
X:1
L:1/8
M:4/4
K:C
['DEFG ABAG', 'eage dfed']  
X:1
L:1/8
M:4/4
K:C
 GE | DEFG ABAG | cEdE edcd | eage dfed | c2 ec Ad d2 | DEFG ABAG | cE (3EEE edda | geae cedc | 
 AcGE D2 :| cd | eaab ageg | Acec gcAG | eage dfed | ecgc eddg | eage dfed | c2 ec Ad d2 | 
 geae cedc | AcGE D2 :|  