Craft melodious tunes in accordance with the outlined letter representation and the provided thematic element.
X:1
L:1/8
M:2/4
K:G
['B2 cB/c/ d2 z d', 'Dddc cBAG BAGF', 'G2 B2 B2 BA A2 c2 c2', 'BdBd cece dfdf']  
X:1
L:1/8
M:2/4
K:G
 B2 cB/c/ | d2 z d | efge | eddc | B2 cB/c/ | d2 z d | ecAF | G2 G2 || Dddc | cBAG | BAGF | 
 G/F/G/A/ GG | Dddc | cBAG | BAGF | G2 G2 :: B2 B2 | BA A2 | c2 c2 | cB c2 | Bddd | e/d/e/f/ gd | 
 fdcB | B2 A2 :: BdBd | cece | dfdf | g/f/e/d/ c/B/A/G/ | BdBd | cece | dfdf | g2 g2 :|  