Construct harmonious tunes in line with the outlined letter symbolism and the presented thematic component.
X:1
L:1/8
M:4/4
K:G
['GAB ABA ABd edd', 'dBG B3 dBG ABA AGA B3 dBd']  
X:1
L:1/8
M:4/4
K:G
|: G3 GAB | ABA ABd | edd gdd | edB dBA | GAG GAB | ABA ABd | edd gdB |1 AGF G2 D :|2 AGF G2 A |: 
 B3 dBd | ege dBG | B3 dBG | ABA AGA | B3 dBd | ege dBd | gfg aga | bgg g3 :|  