Craft melodious tunes in accordance with the outlined letter representation and the provided thematic element.
X:1
L:1/16
M:2/4
K:G
['g2bg d2gd BcdB G2AB', 'G2 (Bc) dBdB gdgd ecec aeae fdfd']  
X:1
L:1/16
M:2/4
K:G
 d2 | g2bg d2gd | BcdB G2AB | cded cBAG | FGEF D2d2 | g2bg d2gd | BcdB G2AB | cedc BAGF | 
 A2G2 G2 :: (Bc) | dBdB gdgd | ecec aeae | fdfd gdgd | fgaf defd | g2bg d2gd | BcdB G2AB | 
 cedc BAGF | A2G2 G2 :|  