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:E
['B3 EGB ege f2 B def BdB', 'E3 BEE EFG BEF =DEB, F=GB ABc']  
X:1
L:1/8
M:6/8
K:E
|: B3 EGB | ege f2 B | def BdB | AcA EFF | GAB EGF | GBe g2 f | edB GEB, | B,GF E3 :: BEE EFG | 
 BEF =DEB, | F=GB ABc | =d2 =d fdB | B3 GAB | FA=d f2 f | edB GEB, | B,GF E3 :|  