Produce music compositions abiding by the stipulated structure and the presented musical idea.
X:1
L:1/8
M:4/4
K:Amix
['a2 fa eA A2', 'cAeA fAeA'  
X:1
L:1/8
M:4/4
K:Amix
|: a2 fa eA A2 | cAeA fAeA | a2 fa eA A2 | Bcdc BG G2 | a2 fa eA A2 | (3Bcd ef g2 fg | afge fdec | 
 dfed cA A2 :: cAeA fAeA | cAaf eA A2 | cAeA fAeA | (3Bcd gd BG G2 | cAeA fAeA | (3Bcd ef g2 fg | 
 afge fdec | dfed cA A2 :|  