Develop tuneful melodies adhering to the specified letter notation and including the supplied thematic aspect.
X:1
L:1/8
M:6/8
K:D
['BAF AAA BAF Ade fed BdB', 'Bce fec Bcd cea ece fec BBB']  
X:1
L:1/8
M:6/8
K:D
 BAF AAA | BAF Ade | fed BdB | AFE EFA | BAF AAA | BAF Ade | fed BdB |1 AFD DFA :|2 AFD D2 e || 
 fec BBB | BcB Bce | fec Bcd | cea ece | fec BBB | BcB Bce | dcd f^ga | eaf ece :|  