Develop tuneful melodies adhering to the specified letter notation and including the supplied thematic aspect.
X:1
L:1/8
Q:1/2=100
M:4/4
K:D
['dBAF G2 (FE) DFAF', 'dfaf g2']  
X:1
L:1/8
Q:1/2=100
M:4/4
K:D
"_No time sig. in ms" dBAF G2 (FE) | DFAF GE E2 | dBAF G2 (FE) | DFAF FD D2 :: dfaf g2 fe | 
 dfaf (g2 e)e | dfaf g2 (fe) | dBAF FD D2 :|  