Develop a musical composition using the outlined alphabetical depiction of the structure and the provided theme.
X:1
L:1/8
M:2/4
K:D
['FA BA', 'BA FA']  
X:1
L:1/8
M:2/4
K:D
|: D2 FA | BA FA | BA Bc | BA FA | D2 FA | BA FA | BA Bc | d2 d2 :: d2 c2 | BA FA | BA Bc | BA FA | 
 d2 c2 | BA FA | BA Bc | d2 d2 :|  