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:A
['c3 d edcd', 'E3 G']  
X:1
L:1/8
M:4/4
K:A
|: c3 d edcd | efga fedc | c3 d edcd | fedc c2 B2 :| | E3 G BGEG | ABcd ecAc | E3 G BGEA | 
 cAec c2 B2 | E3 G BGEG | ABcd ecAc | dfdB cecA | dBAG A2 A2 ||  