Create a musical composition employing the given alphabetic structure and melodic theme.
X:1
L:1/8
Q:1/8=160
M:6/8
K:G
['DGG GFG cAG FGA BdB', '=fed cBA']  
X:1
L:1/8
Q:1/8=160
M:6/8
K:G
 E | DGG GFG | cAG FGA | BdB cAB | G>AG G2 D | DGG GFG | cAG FGA | BdB cAd | G>AG G2 :| A | 
 G=fe f2 g | =fed cBA | Gge g=fg | a=fe d2 c/B/ | cde =fgf | ecB ABc | d^cd =fed | cBA G2 :|  