Create a composition following the given musical structure and theme.
X:1
L:1/8
M:3/4
K:Bb
['BB c2']  
X:1
L:1/8
M:3/4
K:Bb
 f3 gf=e | fgcedc | Bdfgf=e | fc e2 d2 | BB c2 BG | Ff=ef_ec | BB c2 BA | FA c2 B2 |]  