Construct harmonious tunes in line with the outlined letter symbolism and the presented thematic component.
X:1
L:1/8
M:12/8
K:G
['d2 B{d}', 'g f2 a e2']  
X:1
L:1/8
M:12/8
K:G
|: Bc | d2 B BAB | g2 e f2 e | d2 B{d} BAB | e3 efg | d2 B{d} BAB | g2 e f2 e | d2 B{d} cAF |1 
 G3 G :|2 G3 G |: Gg | f2 a e2 g | f2 a e2 f | d2 B{d} BAB | e3 e2 g | f2 a e2 g | fga e2 f | 
 d2 B{d} cAF | G3 G :|  