Craft a musical work based on the specified structure and given theme.
X:1
L:1/8
M:6/8
K:G
['gfg efg', 'cAc Bdg'  
X:1
L:1/8
M:6/8
K:G
|: gfg efg | dec BAG | gfg efg | dBG A3 | gfg efg | dec BAG | DGG BGB | cAF G3 :: DGG BGG | 
 cAc Bdg | DGG BGB | dBG A3 | DGG BGB | cAc Bdg | gfg dec | BGG G3 :|  