Construct harmonious tunes in line with the outlined letter symbolism and the presented thematic component.
X:1
L:1/8
M:9/8
K:D
['DDD dcd', 'A ddd ded cBA ded def g2', 'dDD dcd']  
X:1
L:1/8
M:9/8
K:D
|: DDD dcd BAF | DDD dcd B2 A | DDD dcd BAF | BEE EFA B2 A :: ddd ded cBA | ded def g2 e | 
 ddd dcd cBA | BEE EFA B2 A :: dDD dcd BAF | dDD dcd B2 A | dDD dcd BAF | BEE EFA B2 A :|  