Design a musical work that abides by the outlined structure and integrates the assigned theme.
X:1
L:1/8
M:4/4
K:G
['Bc dB (3BAB GEDE G2 BG dGBG', 'bggg bggg'  
X:1
L:1/8
M:4/4
K:G
 Bc | dB (3BAB GEDE | G2 BG dGBG | AGAB AGED | (3EFG AB c2 Bc | dB (3BAB GEDE | G2 BG dGBG | 
 B2 BA BedB | AGAB G2 :| ga | bggg bggg | afff afff | bggg bggg | eaa^g a2 ga | bg (3gfg agef | 
 gfge dBGA | B2 BA BedB | AGAB G2 :|  