Construct a music composition that complies with the designated structure and theme.
X:1
L:1/8
M:4/4
K:G
['G2 DB, G,B,DB, G,CEC G,B,DG B2 AB', 'cBAG F2'  
X:1
L:1/8
M:4/4
K:G
|: DF | G2 DB, G,B,DB, | G,CEC G,B,DG | B2 AB cBAG | F2 A2 AcBA | G2 DB, G,B,DB, | G,CEC G,B,DG | 
 B2 AB cBAG | D2 G2 G2 :: Bd | gfed B2 GB | cBAG F2 D2 | E2 CE cBAG | F2 D2 D2 GF | E2 CE cBAG | 
 F2 DF dcBA | Ggfg ecAF | A2 G2 G2 :|  