Design various chord structures to improve the overall harmony of the assigned musical composition.
|: B3 B BFBc | dcde f2 d2 | B3 B BFBc | dedc B2 F2 | B3 B BFBc | dcde f2 d2 | 
 B3 B BFBc | dedc B4 :: A2 BA F2 (3ABc | dcde f2 d2 | A2 BA FDFA | dAFD E3 B | 
 A2 BA F2 (3ABc | dcde f2 d2 | A2 BA FAdf | edce d4 :|  
X:1
L:1/8
M:2/2
K:Bmin
|:"Bm" B3 B BFBc | dcde f2 d2 | B3 B BFBc |"F#m" dedc"Bm" B2 F2 |"Bm" B3 B BFBc | dcde f2 d2 | 
 B3 B BFBc |"F#m" dedc"Bm" B4 ::"D" A2 BA F2 (3ABc | dcde f2 d2 |"D" A2 BA FDFA | dAFD"A7" E3 B | 
"D" A2 BA F2 (3ABc | dcde f2 d2 |"D" A2 BA FAdf |"A7" edce"D" d4 :|  