Develop a musical composition by integrating the alphabetically represented musical pattern and the supplied melodic theme.
X:1
L:1/8
M:6/8
K:A
['Aee cee', 'Ace aga']  
X:1
L:1/8
M:6/8
K:A
|: Aee cee | Aee d2 c | Aee dcd | ece gab | Aee cee | dcd ega | bag gae | ecB BcB :: Ace aga | 
 Ace dcd | Ace a3 | bge ecB | Ace aga | cea abc' | c'ba aec |1 ecB Aec :|2 ecB A3 ||  