Craft melodious tunes in accordance with the outlined letter representation and the provided thematic element.
X:1
L:1/8
Q:1/2=70
M:4/4
K:G
['B/c/d dd', 'd2 e>fge']  
X:1
L:1/8
Q:1/2=70
M:4/4
K:G
 z | B/c/d dd c>d e2 | B/c/d BG F>A A2 | B/c/d dd c/d/e/f/ g2 | fadf g2 G :| g | g>abg a<f d2 | 
 e>fge dB G2 | c>dec Bdge | edcB [GB]2 [FA]2 | g>abg a>f d2 | e>fge dBGB | c>dec Bdge | 
 dB{d} cB/A/ G2 G |]  