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
['B>cdB AG FAAc BA B>cdB', 'DGGBAG Bcdefg aAAcBA']  
X:1
L:1/8
M:12/8
K:G
 B>cdB AG | FAAc BA | B>cdB AG | DGGBAG :: Bcdefg | aAAcBA | 
"_(""^)>" B"_(""^)>"c"_(""^)>"d"_(""^)>"efg | BGGBAG :|  