Create a musical piece that includes the provided motif while adhering to the necessary musical structure.
X:1
L:1/8
M:4/4
K:Bmin
['B2 AB- BF A2- ABce c2 BA', 'B2 fB BaBB fBBf e2 f z'  
X:1
L:1/8
M:4/4
K:Bmin
|: B2 AB- BF A2- | ABce c2 BA | B2 fB ef B2 | cF F2 ABcA | B2 AB- BF A2- | ABce c2 BA | 
 B2 fB ef a2 | fe c/B/A B2 z2 :: B2 fB BaBB | fBBf e2 f z | A2 eA AfAA | eAAf ecAF | B2 fB BaBB | 
 fBBf e2 f z | A2 eA AfAA | ecAF B3 A | B2 fB BaBB | fBBf e2 f z | A2 eA AfAA | eAcf ecBA | 
 B2 fB BaBB | fBBf e2 f z | A2 eA AfAA | ecAc B2 z2 :|  