Develop tuneful melodies adhering to the specified letter notation and including the supplied thematic aspect.
X:1
L:1/8
M:2/4
K:A
['ef/e/ ce Ae ce f/g/a/f/ ec', 'ce a>f ec']  
X:1
L:1/8
M:2/4
K:A
 ef/e/ ce | Ae ce | f/g/a/f/ ec | BA F2 | ef/e/ ce | Ae ce | f/g/a/f/ ec | BA A2 :: ce a>f | 
 ec BA | ce a>f | ec B2 | ce f/g/a/f/ | ec BA | ef/e/ cB | BA A2 :|  