Construct harmonious tunes in line with the outlined letter symbolism and the presented thematic component.
X:1
L:1/8
M:3/8
K:G
['B2 z']  
X:1
L:1/8
M:3/8
K:G
 B2 z | B2 z | BAB | d^c=c | A2 z | A2 z | ABc | B2 z | B2 z | B2 z | BAB | d^c=c | AAA | BBA | 
 G2 z | d2 z | d^c=c | B2 z | AAA | cBA | G2 z |]  