Design a musical work that abides by the outlined structure and integrates the assigned theme.
X:1
L:1/8
Q:1/2=90
M:4/4
K:G
['GDB,D GBAc BdFA GBAc', 'dBGB d<Bd<B ecAc e<ce<c'  
X:1
L:1/8
Q:1/2=90
M:4/4
K:G
 D/E/F/ | GDB,D GBAc | BdFA GBAc | BGed cBAG | F2 d2 d2 D/E/F | GDB,D GBAc | BdFA GBAc | 
 d2 BG EcAF | G2 G2 G2 :: (G/A/B/c/) | dBGB d<Bd<B | ecAc e<ce<c | dBed cBAG | F2 A2 A2 G/A/B/c/ | 
 dBGB d<Bd<B | ecAc e<ce<c | d2 BG EcAF | G2 G2 G2 :|  