Develop tuneful melodies adhering to the specified letter notation and including the supplied thematic aspect.
X:1
L:1/8
Q:1/8=160
M:6/8
K:D
['A/G/ FDD FDD FGF FED AFF dFF', 'fdd ecc BdB AGF']  
X:1
L:1/8
Q:1/8=160
M:6/8
K:D
 A/G/ | FDD FDD | FGF FED | AFF dFF | EFE E2 A/G/ | FDD FDD | FGF FED | AFF dFF | DED D2 :| a/g/ | 
 fdd ecc | BdB AGF | fda eca | dB^g a2 a/=g/ | fdd ecc | BdB AGF | AFF dFF | DED D2 :|  