Develop musical pieces that conform to the specified format and include the suggested musical theme.
X:1
L:1/8
M:2/4
K:G
['BB BG', 'B2 GB AG FG A2 |1 d2'  
X:1
L:1/8
M:2/4
K:G
 BB BG | Ac BG | BB BG | AA B2 :: GB AG | FG A2 |1 d2 BA | A2 G2 :|2 d>e dB | cA G2 |]  