Construct harmonious tunes in line with the outlined letter symbolism and the presented thematic component.
X:1
L:1/8
M:2/2
K:D
['d2 fd']  
X:1
L:1/8
M:2/2
K:D
|: DB,A,B, D2 FD | EA,FA, GEFE | DB,A,B, DFAd |1 BdAF GBAF :|2 BdAG FD D2 | d2 fd edfe | 
 defd B3 c | d2 fd A F3 | GBAG FD D2 | d2 fd edfe | defd B3 c | d B3 BdAF | GBAF GFEF ||  