Compose a piece adhering to the given musical structure and theme.
X:1
L:1/8
M:4/4
K:G
['BGGB cAAc', 'ge dBdg eceg fdef g2 fe dB'  
X:1
L:1/8
M:4/4
K:G
|: BGGB cAAc | BGGc Bdgd | BGGB cAAc |1 Bgd^c d3 =c :|2 Bgd^c d3 e |: dBdg eceg | fdef g>a ge | 
 dBdg eceg | fdef g2 fe | dB B2 ec c2 | dBGB AFDd | edef g>a ge |1 dBcA G3 e :|2 dBcA G2 dc ||  