Produce music compositions abiding by the stipulated structure and the presented musical idea.
X:1
L:1/8
Q:1/2=100
M:2/2
K:D
['A2 a2 f>efa']  
X:1
L:1/8
Q:1/2=100
M:2/2
K:D
 A2 a2 f>efa | c>cc>B c2 cB | A2 a2 f>efa | B>BB>A B2 Bc | A2 a2 f>efa | c>cc>B c2 ce | 
 f>gfe f2 (ef/g/) | a2 ec B2 Bc ::  