Develop a musical piece using the given motif and adhere to the outlined musical structure.
X:1
L:1/8
M:4/4
K:Bb
['B<B B2', 'fB e/d/c/B/'  
X:1
L:1/8
M:4/4
K:Bb
 B<B B2 B>df>d | B<B B2 c>B A<F | B<B B2 B>df>d | e<g d<f{cd} c>B A<F :: fB e/d/c/B/ fBeg | 
 fB e/d/c/B/ A/B/c/B/ AF | f>B e/d/c/B/ fBdf | eg df c>B A<F :|  