Produce music compositions abiding by the stipulated structure and the presented musical idea.
X:1
L:1/8
M:2/4
K:A
['', 'FE CE FE', 'af ec cB'  
X:1
L:1/8
M:2/4
K:A
 E2 |: A>B cB | AF FE | CE FE | CE FE | A>B cB | AF FE | CE FE |1 A2 AE :|2 A2 A2 |: ag/a/ ga | 
 ba af | ec cB | AB ce | ag/a/ ga | ba af | ec cB |1 A2 Ae :|2 A z ||  