Construct a musical work that combines the specified alphabet-based pattern with the given melodic theme.
X:1
L:1/8
M:6/8
K:D
['FGA ABA', 'g fed']  
X:1
L:1/8
M:6/8
K:D
 A | FGA ABA | d2 A A2 G | FGA ABA | e2 E E2 A | FGA ABA | d2 A e2 A | fed ABc | dAF D2 || g | 
 fed fed | e2 A A2 d | fed fed | g2 f e2 g | fed gfe | agf (bag) | fed ABc | dAF D2 ||  