Construct harmonious tunes in line with the outlined letter symbolism and the presented thematic component.
X:1
L:1/8
Q:1/4=220
M:6/8
K:G
['B2 A G2 A B2 G A3', 'B3 B2 A G2 A B2 G']  
X:1
L:1/8
Q:1/4=220
M:6/8
K:G
 B2 A G2 A | B2 G A3 | A2 B cBA | B3 B3 :: B2 A G2 A | B2 G A2 F | F2 G ABA | G3 G3 :|  