Compose a piece adhering to the given musical structure and theme.
X:1
L:1/8
M:2/4
K:G
['d z']  
X:1
L:1/8
M:2/4
K:G
 G/A/B/c/ dd/^c/ | dd/^c/ dd | gg fe | ed d2 | A>B cc/B/ | cc/B/ cc | ee dc | cB B2 | gg fe | 
 d2 z2 | ee dc | B2 z2 | gg fe | d2 z2 | ee dc | B2 z2 | B z d z | B z d z | c>B cd | ed d z | 
 B z d z | B z d z | c>B cd | B2 z2 |]  