Develop a musical composition in line with the given structure and theme.
X:1
L:1/8
M:4/4
K:G
['d/c/ BGGD B,2 Dc', 'gdgd gdBG'  
X:1
L:1/8
M:4/4
K:G
 d/c/ | BGGD B,2 Dc | BG B/c/d/B/ cAA d/c/ | BGGD B,2 Dc | B/c/d/B/ A/B/c/A/ BGG :: e/f/ | 
 gdgd gdBG | gdef/g/ aAAe/f/ | gdgd gdBG | B/c/d/B/ A/B/c/A/ BGG :|  