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:Edor
['B2 A B2', 'd2 B']  
X:1
L:1/8
M:6/8
K:Edor
 E2 B B2 A | B2 c d3 | F2 A ABA | D2 E FED | E2 B B2 A | B2 c d3 | cdc B2 A | B2 E E3 :: e2 f gfe | 
 d2 B Bcd | c2 A ABc | d2 B B3 | e2 f gfe | d2 B Bcd | cdc B2 A | B2 E E3 :|  