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:C
['CDE CDE', 'FED EDC G3 FGA GFE |1 FED']  
X:1
L:1/8
M:6/8
K:C
|: CDE CDE | FED E2 D | CDE CDE |1 FED C2 D :|2 GAB c3 |: G3 FGA | GFE FED | EDC G3 | FGA GFE |1 
 FED C2 F :|2 FED [EC]3 ||  