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
['e dGBG dGce dGBG A/B/A ce dGBG', 'BGG f gddg Bgdg gddg BgAf gddg'  
X:1
L:1/8
M:4/4
K:G
 e | dGBG dGce | dGBG A/B/A ce | dGBG B/c/d dg | ecAd BGG :| f | gddg Bgdg | gddg BgAf | 
 gddg dgBg | ecAd | BGG :|  