Design a musical work that abides by the outlined structure and integrates the assigned theme.
X:1
L:1/8
M:6/8
K:D
['D>EF/G/ ABc', 'efg fdd'  
X:1
L:1/8
M:6/8
K:D
 D>EF/G/ ABc | dcB AGF | GBG EFE | FAF DED | D>EF/G/ ABc | DcB AFA |1 Bcd edc | dAG FED :|2 
 Bcd efg | fdd d2 |: g | fdd fdf | ecA efg | fdd def |{a} gfg efg | f/g/af gab | afd cBA |1 
 Bcd efg | fdd d2 :|2 Bcd edc | dAG FED ||  