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
['Bc d3 g edcB dcdg edcB', 'e2 e2']  
X:1
L:1/8
M:4/4
K:G
 Bc | d3 g edcB | dcdg edcB | DGBG DGBG | B2 A2 A2 Bc | d3 g edcB | dcdg edcB | gfgd ecAF | 
 G2 G2 G2 :: Bc | d3 e dBGB | e2 e2 e2 z2 | cdce dcBA | egfa g4 | dBdg eceg | fdfa gfed | 
 gfgd ecAF | G2 G2 G2 :|  