Craft a musical work based on the specified structure and given theme.
X:1
L:1/8
M:4/4
K:G
['G2 BG', 'BdcA G2'  
X:1
L:1/8
M:4/4
K:G
 G,2 B,D GBdB | cafd cAFA | G2 BG DGBG | AF F2 dFAF | G2 BG DGB,G | Aafd ^cdef | g3 d c3 A |1 
 FGAc BGDB, :|2 FGAF G2 Bd |: g3 d ^cdBG | DGBd cAFA | GBBA BcdB | cafd ^cdef | gbaf gdBG | 
 DGBd cAFA | BG G2 AF F2 |1 BdcA G2 Bd :|2 BdcA G2 DB, ||  