Create a composition following the given musical structure and theme.
X:1
L:1/8
M:4/4
K:Dmix
['', 'DCDE FAdc', 'DEFG FDFA'  
X:1
L:1/8
M:4/4
K:Dmix
 A |: FGAB =cBAF | DCDE FAdc | Beed efge | fgab agfe | d=cAB cBAF | DCDE FAdc | BGGB AFFA | 
 (3efe (3dcB AGA z :: DEFG FDFA | dcdA dfed | AB=cA cBAG | EAAB AGFE | DEFG FDFA | dcdf afed | 
 cBAG FEDC | DdcB AGFE :|  