Construct chordal sequences to boost the harmonious coherence within the specified musical piece.
A2 A/A/A B/c/d ec | AB ce dB [GB]B | A2 A2 B/c/d eg | 
 af ge dB [GB]B | A2 A/A/A B/c/d ec | AB ce dB [GB]B | 
 A2 A2 B/c/d eg | af ge dB [GB]B | =cg g2 af ge | =ce ge dB GB | 
 =cg g2 a/g/f gb | af ge dB [GB]G | =cg g2 af ge | =ce ge dB GB | 
 =cg g2 a/g/f gb | af ge dB [GB][B^G] |]  
X:1
L:1/8
M:4/4
K:Amix
"A" A2 A/A/A"A" B/c/d ec |"F#m" AB ce"G" dB [GB]B |"A" A2 A2"A" B/c/d eg | 
"F#m" af ge"Em" dB [GB]B |"A" A2 A/A/A"A" B/c/d ec |"F#m" AB ce"G" dB [GB]B | 
"A" A2 A2"A" B/c/d eg |"A" af ge"G" dB [GB]B |"C" =cg g2 af ge |"F" =ce ge"G" dB GB | 
"C" =cg g2 a/g/f gb |"F" af ge"G" dB [GB]G |"C" =cg g2 af ge | =ce ge"G" dB GB | 
"C" =cg g2 a/g/f gb |"D" af"E" ge dB"A" [GB][B^G] |]  