Construct harmonious tunes in line with the outlined letter symbolism and the presented thematic component.
X:1
L:1/8
M:6/8
K:D
['fddA d2', 'ce dfag f2 dfag fa bagf g2']  
X:1
L:1/8
M:6/8
K:D
 fddA d2 | fddB ce | fddA d2 | efed ce :| dfag f2 | dfag fa | bagf g2 | efed ce :|  