Construct congruent chords that enhance the existing musical piece.
B | ABcA E2 E^F | GABc dB{^F}GB | cABG E2 Ef | ed{AB}cB{cB} A2 A :| B | 
{AB} c2 ce{^c} d2 de |{AB} c2 ce{^c} dB{^F}GB |{AB} c2 ce{^c} d2 df | 
 ed{AB}cB{cB} A2 AB |{AB} c2 ce{^c} d2 de |{AB} c2 ce{^c} dB{^F}GB | 
 ccce dddf | ed{AB}cB{cB} A2 A |]  
X:1
L:1/8
M:4/4
K:Amin
 B |"Am" ABcA E2 E^F |"G" GABc dB{^F}GB |"Am" cABG E2 Ef |"G" ed{AB}"E7"cB{cB}"Am" A2 A :| B | 
"C"{AB} c2 ce"G"{^c} d2 de |"C"{AB} c2 ce"G"{^c} dB{^F}GB |"C"{AB} c2 ce"Dm"{^c} d2 df | 
"G" ed"E7"{AB}cB"Am"{cB} A2 AB |"C"{AB} c2 ce"G"{^c} d2 de |"C"{AB} c2 ce"G"{^c} dB{^F}GB | 
"C" ccce"Dm" dddf |"G" ed"E7"{AB}cB"Am"{cB} A2 A |]  