Design a musical composition incorporating the alphabetic expression of the chosen structure and the provided melodic theme.
X:1
L:1/8
M:6/8
K:Emin
['E2 B', 'G2 B BAB BAB dBA FGA DFA']  
X:1
L:1/8
M:6/8
K:Emin
|: E2 B BAG | FGA D2 F | E2 B BAB | GBG AFD | E2 B BAG | FGA D2 F | GAB dBA | BEE E3 :: G2 B BAB | 
 BAB dBA | FGA DFA | B2 A FED | G2 B BAB | BAB dBA | FGA DFA | BEE E3 ||  