Create harmonious melodies following the given letter notation and incorporating the designated theme.
X:1
L:1/4
M:4/4
K:G
['c B', 'd c/B/ A B c B/A/ G', '_B A/G/']  
X:1
L:1/4
M:4/4
K:G
|: G3/2 A/ B B | c B A c | B A G F | E2 D2 | G3/2 A/ B B | c B A c | B G A F | G2 G2 :: 
 d c/B/ A B | c B/A/ G B | A G F G | A3/2 B/ A2 | d c/B/ A B | c B/A/ G B | A G G F G2 G2 :: 
 _B A/G/ _B A/G/ | F G A2 | D E F G | A _B A2 | _B A/G/ _B A/G/ | F G A2 | D E F G | G F G2 :|  