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:Amin
['EA A2 cdea', 'ea a2']  
X:1
L:1/8
M:4/4
K:Amin
|: cecA EAAG | E2 DG EGDG | EA A2 cdea | a^gea ^gedB | ced=f edcB | (3ABc BA GED=F | EA A2 cdea | 
 gedB A3 :: ea a2 aged | (3Bcd ef g3 d | ea a2 g2 ef | gedB cAAf | ea a2 aged | (3Bcd ef g3 d | 
 eage d2 ef | gedB cA A2 :|  