Compose melodious music utilizing the prescribed letter representation and integrating the given thematic element.
X:1
L:1/8
M:2/4
K:D
['F2 ED']  
X:1
L:1/8
M:2/4
K:D
 F2 ED | DB BA | A2 B/c/d | F2 ED | F2 E2 | E2 FA | d2 cB | BA FA | A2 B/c/d | e2 dB | B2 AF | 
 AB d2 | F2 ED | B2 cd | D2 EF | E2 D2 | d2 AA | e2 AA | f2 ed | dA BB | A2 FE | Dd de | fd df | 
 e2 d2 | d2 AA | ef g2 | f2 ed | dc B2 | A2 BB | AD EE | FA AF | E2 D2 ||  