Develop tuneful melodies adhering to the specified letter notation and including the supplied thematic aspect.
X:1
L:1/8
M:4/4
K:G
['', 'edBA G2', 'eaag baag']  
X:1
L:1/8
M:4/4
K:G
 B/c/d |: edBA G2 G2 | B/c/d ef g2 fg | edBA G2 GB | d2 ed BA A2 :| eaag baag | eggg eg g2 | 
 eaag baag | e2 dB BA A2 | eaag baag | edef g2 ga | bgaf gfed | B/c/d ef g2 g2 ||  