Produce a music composition that follows the designated structure and stays true to the genre's conventions.
'Ternary', 'Sectional: Verse/Chorus/Bridge'  
X:1
L:1/8
M:4/4
K:Bmin
|: fB (3BBB fBaB | fB (3BBB edce | fB (3BBB f3 e |1 dfaf e2 de :|2 dfaf e3 c |: dcde f3 e | 
 defd edBA | dcde f3 e |1 dfaf e3 c :|2 dfaf edba || 
"^Part A variation, sometimes played as a Part C" fB (3BBB fBaB | fb (3BBB e2 de | fB (3BBB f3 e | 
 dfaf e2 de | fB (3BBB bBaB | fBeB fede | fB (3BBB f3 e | dfaf e4 ||  