Develop tuneful melodies adhering to the specified letter notation and including the supplied thematic aspect.
X:1
L:1/8
Q:1/4=100
M:2/4
K:D
['df e/g/e/c/', 'f/a/f/d/ f/a/f/d/', 'E EFG ABc dfe dcB cAF EFD', 'd c2 d e3 fed ecA cde']  
X:1
L:1/8
Q:1/4=100
M:2/4
K:D
 f | e/g/e/c/ df | e/g/e/c/ dA | BA Bc | d/c/d/e/ df | e/g/e/c/ df | e/g/e/c/ dA | BA Bc | d2 D :: 
 g | f/a/f/d/ f/a/f/d/ | f/a/g/b/ eg | f/a/f/d/ f/a/f/d/ | e/a/e/c/ Ag | f/a/f/d/ f/a/f/d/ | 
 f/a/g/b/ eg | f/a/f/d/ e/g/e/c/ | d2 D :|[M:6/8][K:A][Q:3/8=120] E | EFG ABc | dfe dcB | cAF EFD | 
 cdB A2 :: d | c2 d e3 | fed ecA | cde fga | ABA GFE | dfd cec | BAB cAF | AGF Eed | cdB A2 :|  