Construct harmonious tunes in line with the outlined letter symbolism and the presented thematic component.
X:1
L:1/8
M:2/2
K:F
['c2 (cd) cBAB', 'faga fcAc']  
X:1
L:1/8
M:2/2
K:F
|: c2 (cd) cBAB | cfef gfed | c2 (cd) cBAB | G^FGA B=Bdc :| faga fcAc | faga baga |1 faga fcAc | 
 BAGA Bcde :|2 bgaf gefd | cdef gfed |]  