Compose music that follows the specified structure and includes the provided theme
X:1
L:1/8
M:6/8
K:D
['B2 c', 'afg a2'  
X:1
L:1/8
M:6/8
K:D
 F | F>BB B2 c | dcd fed | cAA eAA | ced cBA | FBB B2 c | def b2 a | fed cde | f^ef B2 :: f/g/ | 
 afg a2 b | afg a2 A | ABA cBA | ced cBA | F>BB B2 c | def b2 a | fed cde | f^ef B2 :|  