Compose music by following the designated structure and integrating the suggested musical idea.
X:1
L:1/8
M:2/4
K:Bb
['g f d f g']  
X:1
L:1/8
M:2/4
K:Bb
 f' d' c' f' | c' g f d | f g b d | c4 | f' d' c' f' | c' g f d | f g f d | f g f d | f g c'2 | 
 f'/ c'/ b3 | g f3 |]  