Construct harmonious tunes in line with the outlined letter symbolism and the presented thematic component.
X:1
L:1/8
Q:3/8=120
M:6/8
K:C
['G GAB cde fag fed ecA GAc', "c2 f ece g2 b afc' gec"]  
X:1
L:1/8
Q:3/8=120
M:6/8
K:C
 G | GAB cde | fag fed | ecA GAc | efd c2 :: f | ece g2 b | afc' gec | ceg abc' | cdc BAG | 
 faf ec'e | dcd ecA | cBA Ggf | efd c2 :|  