Create harmonious melodies following the given letter notation and incorporating the designated theme.
X:1
L:1/8
M:3/4
K:F
['CE F G2 FD C=B,']  
X:1
L:1/8
M:3/4
K:F
 CFC | F3 G/G/ C/C/ =B, | C3 CF C | F3 GA c | G3 G/A/ BG | c2 GF EC | F3 CE F | G2 FD C=B, | 
 C3 CE F | G2 FD C=B, | C3 ||  