Compose melodious music utilizing the prescribed letter representation and integrating the given thematic element.
X:1
L:1/8
M:6/8
K:D
['FFF FED', 'AAA FAd fff FAd']  
X:1
L:1/8
M:6/8
K:D
 FFF FED | EEE EDE | GGG GFE | FFF FED | FFF FED | EEE EDE | G2 F2 E2 | F2 D2 z2 :: AAA FAd | 
 fff FAd | ggg GBd | fzf fed | AAA FAd | fff FAd | G2 F2 E2 | F2 D2 z2 :|  