Construct harmonious tunes in line with the outlined letter symbolism and the presented thematic component.
X:1
L:1/8
M:6/8
K:D
['fg aba egf d3 def gfg Bed', 'gfe gfe efg agf', 'efg f b3 a3 dcd B2 c']  
X:1
L:1/8
M:6/8
K:D
 fg | aba egf | d3 def | gfg Bed | cBc ABc | dcd Bcd | efd cde | fba gfe | d2 f d2 || e | gfe gfe | 
 efg agf | edc ABc | cBB Bce | gfe gfe | efg agf | eac edB | Acd efg || f | b3 a3 | dcd B2 c | 
 dcB dcB | fff fga | bbb fff | dcd Bcd | eac edB | Acd efg ||  