Construct chordal sequences to boost the harmonious coherence within the specified musical piece.
|: B<B d>e f>e f<a | A<A c>B A>c e>c | B>B d>e f>e f>^g | a>f e>c B<B f2 :| 
 d>f B>f d<f B>f | c<e A>e c<e A>e | d<f B>f d<f B>f | a>f e>c B<B f2 || | 
 d>f B>f d>f B>f | c>e A>e c>e A>e | B<B d>e f>e f>^g | a>f e>c B<B f2 |]  
X:1
L:1/8
M:4/4
K:Bmin
|:"Bm" B<B d>e f>e f<a |"A" A<A c>B A>c e>c |"Bm" B>B d>e f>e f>^g |"F#m" a>f e>c"Bm" B<B f2 :| 
"Bm" d>f B>f d<f B>f |"A" c<e A>e c<e A>e |"Bm" d<f B>f d<f B>f |"F#m" a>f e>c"Bm" B<B f2 || | 
"Bm" d>f B>f d>f B>f |"A" c>e A>e c>e A>e |"Bm" B<B d>e f>e f>^g |"F#m" a>f e>c"Bm" B<B f2 |]  