Craft a musical piece that incorporates the given motif and follows the outlined structure.
X:1
L:1/8
M:2/4
K:Bb
['B cABB d/c/ABB cdef edcc c>dec de']  
X:1
L:1/8
M:2/4
K:Bb
 B | cABB | d/c/ABB | cdef | edcc | c>dec | de f2 | Bd c2 | BAGF | Bcd>B | c2 B |]  