Compose a piece of music that follows the specified structure and incorporates the given theme.
X:1
L:1/8
Q:1/8=180
M:6/8
K:D
['AFD AFD', 'g fdd def'  
X:1
L:1/8
Q:1/8=180
M:6/8
K:D
|: F/G/ | AFD AFD | GE=C C2 F/G/ | AFD AFD | AFD AFA | BGB AFD | GE=C C2 F/G/ | AFA dAG | F3 D2 :: 
 g | fdd def | ge=c c2 g | fdd def | g3 e2 g | fdd def | ge=c c2 g | faf geg | f3 d2 :|  