Construct a musical composition utilizing the provided motif and conforming to the specified structure.
X:1
L:1/8
Q:1/4=120
M:4/8
K:Bmin
['B3 c']  
X:1
L:1/8
Q:1/4=120
M:4/8
K:Bmin
"Bm" B3 c | d3 F | B3 c | d4 |"A" cdcB | A2"Bm" B2 |"A" cdcB |"Bm" B4 | B3 c | d4 |"A" c3 d | e4 | 
"Bm" d2 e2 | f2 g2 | f4- |1 f4 :|  