Develop a musical composition using the outlined alphabetical depiction of the structure and the provided theme.
X:1
L:1/8
Q:1/2=90
M:2/2
K:D
['B AFdF AFDB AFde EB AFdF AFDf', 'af bgaf']  
X:1
L:1/8
Q:1/2=90
M:2/2
K:D
 B | AFdF AFDB | AFde !turn!c2 EB | AFdF AFDf | edef d/d/d d2 :: (d/e/f/g/) af bgaf | gefd ce e2 | 
 de/f/ af bgaf | edef d/d/d d2 :|  