Compose melodious music utilizing the prescribed letter representation and integrating the given thematic element.
X:1
L:1/8
M:2/4
K:Dmin
['DFED DFED', 'D2 DCCC DB,B,B,']  
X:1
L:1/8
M:2/4
K:Dmin
 DFED | DFED | DFED | D2 D2 :| DCCC | DB,B,B, | DFED | D2 D2 | DCCC | DB,B,B, | DA,A,A, | 
 G,2 !fermata!G,2 |]  