Develop music that conforms to the outlined musical structure and the given theme.
X:1
L:1/8
M:2/4
K:Bb
['bg f2']  
X:1
L:1/8
M:2/4
K:Bb
 c4 | cbgf | gb c2- | c2 db | c4 | gbce | bg f2 | gb c2- | c4 | df/d/cc | bc/d/ c2 | gbce | bg f2 | 
 efce | g/f/e f2 | ce f2- | f4 | fdfd/f/ | c/d/b c2 | gbcd/d/ | bg f2 | cb c2- | c4 |]  