Construct harmonious tunes in line with the outlined letter symbolism and the presented thematic component.
X:1
L:1/8
M:4/4
K:Bb
['', 'B/B/B B2{AB}', 'f>B e/d/c/B/']  
X:1
L:1/8
M:4/4
K:Bb
 FS |: B/B/B B2{AB} B>dfd | B/B/B B2{AB} A<cA>F | B/B/B B2{AB} B>dfd | e<gd<f c>BAF :| 
 f>B e/d/c/B/ fBe<g | f>B e/d/c/B/ AcA>F | f>B e/d/c/B/ fBdf | e<gd<f c>BAF | f>B e/d/c/B/ fBeg | 
 f>B e/d/c/B/ A/B/c/B/ AF | f>B e/d/c/B/ fBdf | e<gd<b c>BAFS |]  