Utilizing the provided musical theme and letter-based structure, compose a piece of music.
X:1
L:1/8
M:6/8
K:Emin
['BAG E2 D EGD EGA BAB GED', 'G2 G GBd e2 d dgg B2']  
X:1
L:1/8
M:6/8
K:Emin
 A | BAG E2 D | EGD EGA | BAB GED | EA^G ABc | BAG E2 D | EGD EGA | BAB GED | EGF G2 :| G | 
 GBd e2 d | dgg B2 A | GBd edB | caa a2 ^a | bag age | (3efg d (3efg e | dBG ABc | BGF G2 :|  