Construct chordal sequences to boost the harmonious coherence within the specified musical piece.
B | EDE G2 A | B2 A Bcd | DED F2 G | ABA AFD | EDE G2 A | B2 A Bcd | edB cBA | 
 BEE E2 :: d | e2 f gfe | fag fed | e2 f gfe | fBB B3 | e2 f gfe | 
 fag fed | edB cBA | BEE E2 :|  
X:1
L:1/8
Q:1/8=120
M:6/8
K:Emin
 B |"Em" EDE G2 A | B2 A Bcd |"D" DED F2 G | ABA AFD |"Em" EDE G2 A | B2 A Bcd | edB"D" cBA | 
"Em" BEE E2 :: d |"Em" e2 f gfe |"D" fag fed |"Em" e2 f gfe |"Bm" fBB B3 |"Em" e2 f gfe | 
"D" fag fed |"Em" edB"D" cBA |"Em" BEE E2 :|  