Compose music by following the designated structure and integrating the suggested musical idea.
X:1
L:1/8
M:2/4
K:C
['ga/b/ cgeg fddf', 'c3 c Bddd fddd ceee geee aaca'  
X:1
L:1/8
M:2/4
K:C
 ga/b/ | cgeg | fddf | ecge | e2 d ga/b/ | cgeg | fddf | ecdB | c3 :: c | Bddd | fddd | ceee | 
 geee | aaca | ggeg | fdcB | c3 :|  