Develop tuneful melodies adhering to the specified letter notation and including the supplied thematic aspect.
X:1
L:1/4
M:4/4
K:G
['G G F/G/A/F/ G', 'G B']  
X:1
L:1/4
M:4/4
K:G
 D | G G F/G/A/F/ | G G F/G/A/F/ | G A/B/ c/B/ A | F A D2 | G G F/G/A/F/ | G G F/G/A/F/ | 
 G A/B/ c/B/ A | G B G :| F/E/ | D d d e | d/c/B/A/ G G | A D D D | G B B3/2 A/ | G B d e | 
 d/c/B/A/ G B | A e d/c/B/a/ | G B G :|  