Assemble a musical composition that combines the featured motif and conforms to the defined alphabetical form.
X:1
L:1/8
M:3/2
K:Bmin
['Bf fB f2 ef gf ed cB', 'cd B2', 'cB fc f2 ef gf ed cB', 'cd B2']  
X:1
L:1/8
M:3/2
K:Bmin
|: Bf fB f2 | ef gf ed | cB cd ef | e2 ce dc :: fB cd B2 | gB cd B2 | ed ce dc | AB cd cB :: 
 fc f2 ef | gf ed cB | cd ef e2 | ce dc B2 :: fB cd B2 | gB cd B2 | AB cd ed | ce dc cB :|  