Compose a piece of music following the specified structure and theme.
X:1
L:1/8
M:2/2
K:G
['G,B, DG B,D GB DG Bd GB', 'G2 Bc dB GB dB gd ba'  
X:1
L:1/8
M:2/2
K:G
|: (3CB,A, | G,B, DG B,D GB | DG Bd GB dg | ed cB cB AG | Fd AF DC B,A, | G,B, DG B,D GB | 
 DG Bd GB dg | ed cB cD EF | G2 B2 G2 :: Bc | dB GB dB gd | ba gf ed cB | dA FA cA fd | 
 ag fe dc BA | (3BcB GB (3cdc Ac | (3ded Bd e2 dc | Bg dB dc AF | G2 B2 G2 :|  