Compose music by following the designated structure and integrating the suggested musical idea.
X:1
L:1/8
M:2/4
K:D
['BBAG FAAA']  
X:1
L:1/8
M:2/4
K:D
 z AAA | BBAG | FAAA | BBAG | FAAA | d2 cB | c2 B2 | A2 z2 |]  