Compose melodious music utilizing the prescribed letter representation and integrating the given thematic element.
X:1
L:1/16
M:2/4
K:D
['D2F2A2d2 g4 e4', 'D4 a2f2fgaf g2e2efge a2f2fgaf g2e2 e4 D2F2A2d2']  
X:1
L:1/16
M:2/4
K:D
 D2F2A2d2 | g4 e4 | f2edc2d2 | edcB A4 | D2F2A2d2 | g4 e4 | f2edcdec | d4 D4 :: a2f2fgaf | 
 g2e2efge | a2f2fgaf | g2e2 e4 | D2F2A2d2 | g4 e4 | f2edcdec | d4 D4 :|  