Develop tuneful melodies adhering to the specified letter notation and including the supplied thematic aspect.
X:1
L:1/4
M:4/4
K:G
['f a b/ a/ g/ f/']  
X:1
L:1/4
M:4/4
K:G
 B G B/ c/ d | e c A c | B G g G | B2 d2 | B G B/ c/ d | e c A c | B G g G | B2 d2 | 
 f a b/ a/ g/ f/ | e g g f/ e/ | f a b/ a/ g/ f/ | e2 d2 | f a b/ a/ g/ f/ | e g g f/ e/ | 
 f a b/ a/ g/ f/ | e2 d2 | e c c/ d/ e/ c/ | d B B/ c/ d/ B/ | g G G A | B2 d2 | e c c/ d/ e/ c/ | 
 d B B/ c/ d/ B/ | g G G A | B2 d2 ||  