Craft melodious tunes in accordance with the outlined letter representation and the provided thematic element.
X:1
L:1/8
M:4/4
K:G
['dd dd']  
X:1
L:1/8
M:4/4
K:G
 z4 z2 d2 | GG G2 B3 D | GG GG B3 B | dd dd dd dd | e2 dd B2 GG | A2 B2 AG ED | G2 GB d2 Bc | 
 d2 e2 dc AF | G6 z2 |]  