Construct harmonious tunes in line with the outlined letter symbolism and the presented thematic component.
X:1
L:1/8
M:8/8
K:D
['BAG FAF G2 G GAB', 'faf faf']  
X:1
L:1/8
M:8/8
K:D
 c | BAG FAF | G2 G GAB | AcA AcA | c2 c cde | BAG FAF | G2 G GAB | A2 A BAG | F2 D D2 :: g | 
 faf faf | gbg gbg | faf faf | g2 e c2 e | faf faf | gbg gbg | fed cec | d2 D D2 :|  