Produce pleasing melodies that correspond with the indicated letter notation and incorporate the suggested theme.
X:1
L:1/8
M:4/4
K:C
['A G2 B', 'faf def']  
X:1
L:1/8
M:4/4
K:C
 |[M:6/8][K:D] (3TF2 A G2 B | ABc d3 | F2 A G2 B | AFD TE2 D | F2 A G2 B | ABc d2 e | f2 d g2 f | 
 edc d2 :| | e | faf def | gbg efg | faf def | ecA A2 g | faf def | gbg efg | f2 d g2 f | edc d2 :|  