Produce music compositions abiding by the stipulated structure and the presented musical idea.
X:1
L:1/8
M:2/4
K:A
['ef/e/ ce Ae ce f/f/f/f/ ec', 'fa/f/ ec'  
X:1
L:1/8
M:2/4
K:A
|: ef/e/ ce | Ae ce | f/f/f/f/ ec | BA F2 | ef/e/ ce | Ae ce | f/f/f/f/ ec |1 BA A2 :: ce fa/f/ | 
 ec BA/B/ | ce fa/f/ | ec B>B | ce fa/f/ | ec BA | ef/e/ cB |1 BA A>B :|  