Construct harmonious tunes in line with the outlined letter symbolism and the presented thematic component.
X:1
L:1/8
Q:1/2=80
M:4/4
K:Bb
['B2 b2 B2 (gf) edcB AGFE DBFB', 'Bf f2']  
X:1
L:1/8
Q:1/2=80
M:4/4
K:Bb
 dc | B2 b2 B2 (gf) | edcB AGFE | DBFB GBFB | cdec BAGF | B2 b2 B2 (gf) | edcB AGFE | DBFB GecA | 
 B2 B2 B2 :: dc | Bdce dfeg | Bf f2 Bf f2 | babg =ebge | f2 f2 f2 (ga) | babf dBdf | gfgB AGFE | 
 DBFB GecA | B2 B2 B2 :|  