Develop a musical composition utilizing the presented motif and adhering to the required structure.
X:1
L:1/8
M:2/4
K:Bmin
['B2 A2 B>cd>e f4', 'f3 d B2 f2'  
X:1
L:1/8
M:2/4
K:Bmin
 A2 | B>BB>c B2 A2 | B>cd>e f4 | e3 f e>fe>d | c2 A2 A2 f2 | B2 B>c B2 A2 | B>cd>e f4 | 
 e2 a2 f2 ef | d2 B2 B2 :: d/e/ | f3 d B2 f2 | B>BB>c f4 | e3 f e>fe>d | c2 A2 A2 de | f3 d B2 f2 | 
 B>BB>d f4 | e2 a2 f2 ef | d2 B2 B2 :|  