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
['', 'c AGED ECCD EGAB c2 Bc AGED', 'Ad (3ddd']  
X:1
L:1/8
M:4/4
K:C
 c |: AGED ECCD | EGAB c2 Bc | AGED CDEG | AcGE D3 d :| Ad (3ddd eddc | AddB c2 Bc | 
 Ad (3ddd eddB | cAGE D2 EG | Ad (3ddd eddc | AddB c2 Bc | ecdB cBAG | EGAB c2 Bc ||  