Create a series of chord progressions to improve the harmonic structure of the given music piece.
E | A>BA c2 d | edc B2 A | G>AG B2 c | dge dBG | A>BA c2 d | edc Bcd | 
 e2 A AB^G | A3 a z :: B | c>de/f/ g2 a | gec gec | G>AB/c/ d2 e | dBg dBG | 
 c>de/f/ g2 a | gec ce^g | a2 A AB^G | A3 a z :|  
X:1
L:1/8
M:6/8
K:Amin
 E |"Am" A>BA c2 d | edc B2 A |"G" G>AG B2 c | dge dBG |"Am" A>BA c2 d | edc"G" Bcd | 
"Am" e2 A"E7" AB^G |"Am" A3 a z :: B |"C" c>de/f/ g2 a | gec gec |"G" G>AB/c/ d2 e | dBg dBG | 
"C" c>de/f/ g2 a | gec"E7" ce^g |"Am" a2 A"E7" AB^G |"Am" A3 a z :|  