Design a musical composition incorporating the alphabetic expression of the chosen structure and the provided melodic theme.
X:1
L:1/16
Q:1/4=120
M:2/4
K:D
['dcde d2d2 d2c2B2A2']  
X:1
L:1/16
Q:1/4=120
M:2/4
K:D
 dcde d2d2 | d2c2B2A2 | B2d2c2e2 | d4 A4 | dcde d2d2 | d2c2B2A2 | BdcB cedc | d4 D4 ::  