Construct a range of chord structures to intensify the harmonic complexity of the provided musical piece.
AB | cd/ z/ BA cd/ z/ BA B2 AG | cd/ z/ BA cd/ z/ BA e2 AB | 
 cd/ z/ BA cd/ z/ BA B2 AG | A2 GE DE GA BA Bc | dcBA e2 || AB | 
 A2 a2 e2 dc B2 AG | A2 a2 e2 dc e2 AB | A2 a2 e2 dc BABG | 
 A2 GE DE GABA Bc | dcBA e2 ||  
X:1
L:1/8
M:6/4
K:Amin
 AB |"Am" cd/ z/ BA"Am" cd/ z/ BA"G" B2 AG |"Am" cd/ z/ BA"Am" cd/ z/ BA"Em" e2 AB | 
"Am" cd/ z/ BA"Am" cd/ z/ BA"G" B2 AG |"Am" A2 GE"G" DE GA"G" BA Bc |"G" dcBA"Am" e2 || AB | 
"Am" A2 a2"Am" e2 dc"G" B2 AG |"Am" A2 a2"Am" e2 dc"Em" e2 AB |"Am" A2 a2"Am" e2 dc"G" BABG | 
"Am" A2 GE"G" DE GA"G"BA Bc |"G" dcBA"Em" e2 ||  