Compose a piece of music that follows the specified structure and incorporates the given theme.
X:1
L:1/16
M:2/4
K:G
['G2BG dGBG ABcd cBAG', 'g2dg Bgdg'  
X:1
L:1/16
M:2/4
K:G
 D2 | G2BG dGBG | ABcd cBAG | Bdfd egdB | cBAG FADF | G2BG dGBG | ABcd cBAG | Bdgd egdB | 
 z d ^cA G2 :: ef |{a} g2dg Bgdg | gabg agef | g2dg Bgdg | cBAG FADF |{f} g2dg Bgdg | gabg agef | 
 gfga gfed | egfa gedB :|  