Construct a musical work that combines the specified alphabet-based pattern with the given melodic theme.
X:1
L:1/8
Q:1/8=120
M:6/8
K:G
['GFG BBA GEE EFE DED G2 A', 'B AGA B3 BdB AGA BGF D3']  
X:1
L:1/8
Q:1/8=120
M:6/8
K:G
|:"^A" GFG BBA | GEE EFE | DED G2 A | BGG G3 ::"^B" BAB d2 B | AGA B3 | BdB AGA | BGF D3 | 
 GFG BBA | GEE EFE | DED G2 A | BGG G3 :|  