Compose a piece of music using the specified alphabetical notation system and the provided theme.
X:1
L:1/8
M:6/8
K:D
['FEF DFA dfa baf dcd faf', 'FEF DFA A,CE DFA dcd']  
X:1
L:1/8
M:6/8
K:D
 FEF DFA | dfa baf | dcd faf | cee efe | FEF DFA | dfa baf | dcd faf | gec d2 d :: FEF DFA | 
 A,CE DFA | dcd fed | cee efe | FEF DFA | A,CE DFA | dcd faf | gec d2 d :|  