Compose melodious music utilizing the prescribed letter representation and integrating the given thematic element.
X:1
L:1/4
M:3/4
K:C
['g2 c e2 d f3/2']  
X:1
L:1/4
M:3/4
K:C
 e g2 | c e2 | d f3/2 e/ | e g2 | g g2 | c e2 | d f3/2 d/ | d c2 |]  