Craft a musical piece that abides by the prescribed structural guidelines and the given theme.
X:1
L:1/8
M:4/4
K:G
['G2 G2']  
X:1
L:1/8
M:4/4
K:G
 D2 | G2 G2 G2 G2 | BB dd B2 G2 | c3 (B/)A/ B3 (A/)G/ | AA AG E2 GD | G2 G2 G2 G2 | BB dd B2 G2 | 
 DD DD E2 F2 | G6 ||  