Construct harmonizing chords for the given musical piece.
"^A" E2 | ABcA E2 E^F | GABc dBGB | ABcA E2 f2 | edcB A2 :|"^B" AB | 
 c2 ce d2 de | c2 ce dBGB | c2 ce d2 df | edcB A2 :|"^B alt" AB | 
 cBce dcde | cBce dBGB | cBce dcdf | edcB A2 ||  
X:1
L:1/8
M:4/4
K:Amin
"^A" E2 |"Am" ABcA E2 E^F |"G" GABc dBGB |"Am" ABcA E2 f2 |"E7" edcB"Am" A2 :|"^B" AB | 
"C" c2 ce"G" d2 de |"C" c2 ce"G" dBGB |"C" c2 ce"G" d2 df |"E7" edcB"Am" A2 :|"^B alt" AB | 
"C" cBce"G" dcde |"C" cBce"G" dBGB |"C" cBce"G" dcdf |"E7" edcB"Am" A2 ||  