Produce pleasing melodies that correspond with the indicated letter notation and incorporate the suggested theme.
X:1
L:1/8
M:2/4
K:D
['df g2 eg', 'FDAF dA g2']  
X:1
L:1/8
M:2/4
K:D
 [DAf]2 df | g2 eg | [DAf]2 df | e/d/c/B/ A2 | D/A/f/ df | g2 eg | fa Ac | d2 D2 :: FDAF | dA g2 | 
 fe/d/ cd | e/d/c/B/ A2 | FDAF | dA g2 | fg/a/ Ac | d2 D2 :|  