Develop a musical composition in line with the given structure and theme.
X:1
L:1/8
M:4/4
K:G
['BG dGBG', 'ed)Bd g2 (bg)'  
X:1
L:1/8
M:4/4
K:G
 d2 BG dGBG | G2 (3(Bcd) efg(e | d2) BG dGBG | ABc(d ed)ce | d2 (BG) dGBG | G2 (3(Bcd) efg(e | 
 d2) BG dGBG | ABc(d ed)Bd :: g2 (bg) egd(g | (3efg) d(g ed)Bd | g2 (bg) egdB | BAB(d ed)Bd | 
 g2 (bg) egd(g | (3efg) d(g ed)Bd | gab(g ef)ge | d(ega) bage :|  