Compose a musical piece that incorporates the given motif and adheres to the specified form.
X:1
L:1/8
M:4/4
K:Bmin
['fB B2', 'dfaf e2'  
X:1
L:1/8
M:4/4
K:Bmin
|: fB B2 fBaB | fB B2 e2 de | fB B2 f3 e |1 dfaf e2 de :|2 dfaf e2 fe |: d3 e f3 e | defd eA A2 | 
 d3 e fgfe |1 dfaf e2 fe :|2 dfaf e2 de ||  