Construct harmonious tunes in line with the outlined letter symbolism and the presented thematic component.
X:1
L:1/8
M:2/4
K:D
['FE/D/ ED/E/', '[AF]DD d/e/ fd d/c/d/e/ fd dg/e/ be']  
X:1
L:1/8
M:2/4
K:D
 D/E/ | FE/D/ ED/E/ | FE/D/ ED/E/ | FA B/c/d/c/ | BE Ed/e/ | fe/d/ Bd | AFFD | E>F ED/E/ | 
 [AF]DD :: d/e/ | fd d/c/d/e/ | fd dg/e/ | be e/f/g/e/ | be ed/e/ | fe/d/ Bd | AF FD | E>F ED/E/ | 
 FDD :|  