Create a musical composition that adheres to the provided structure and theme.
X:1
L:1/8
M:2/4
K:G
['ddgg ffgf/e/ de/d/ cd/c/ B2 A2 ddgg', 'z2 BBcd ee e2 AABc dd d2'  
X:1
L:1/8
M:2/4
K:G
|: ddgg | ffgf/e/ | de/d/ cd/c/ | B2 A2 | ddgg | fgag | fe/d/ ed/^c/ | d2 z2 :: BBcd | ee e2 | 
 AABc | dd d2 | GGBB | ddgd | gf/e/ dc/B/ | A2 G2 :|  