Construct a musical composition utilizing the provided motif and conforming to the specified structure.
X:1
L:1/8
Q:1/4=160
M:2/4
K:Emin
['(B/c/d/B/) GB', '(f/g/a/g/) fd'  
X:1
L:1/8
Q:1/4=160
M:2/4
K:Emin
"_no key sig in ms" c | (B/c/d/B/) GB | gddc | (B/c/d/B/) GB | cAAc | (B/c/d/B/) GB | gddf | gebf | 
 gee :: g | (f/g/a/g/) fd | fddg | (f/g/a/g/) fd | geeg | (f/g/a/g/) fd | (f/g/a/g/) fd | gebf | 
 gee :|  