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
['G2 dG G2', 'aged cdef']  
X:1
L:1/8
M:4/4
K:G
 G2 dG G2 dG | G2 dc BAGB | A2 eA A2 eA | A2 ed cAFA | G2 dG G2 dG | G2 dc BAGB | ABcd efge |1 
 aged cAFA :|2 aged cdef |] g2 af g2 ef | gedc BG G2 | eaag ageg | aged cdef | g2 af g2 ef | 
 gedc BG G2 | ABcd efge |1 aged cdef :|2 aged cAFA |]  