Construct a range of chord structures to intensify the harmonic complexity of the provided musical piece.
(3(def) | g>fe>d e>dB>d | ed (3(efg) B2 BA | G>FG>A B>AB>d | 
 e2 A2 A2 (e>f) | g>fe>d e>dB>d | ed (3(efg) B2 (B>A) | 
 G>FG>A B>cB>A | G2 E2 E2 :| (g>f) | e2 B2 B2 gf | 
 (3(efe) B2 B2 (g>f) | e>de>f g>fg>a | b2 e2 e2 (g>a) | b>ga>f g2 (g>f) | 
 ed (3(efg) B2 B>A | G>FG>A B>cB>A | G2 E2 E2 :|  
X:1
L:1/8
M:4/4
K:G
 (3(def) |"Em" g>fe>d e>dB>d |"C" ed (3(efg)"G" B2"D7" BA |"G" G>FG>A B>AB>d | 
"Am" e2 A2"D7" A2 (e>f) |"Em" g>fe>d e>dB>d |"C" ed (3(efg)"G" B2"D7" (B>A) | 
"G" G>FG>A"Am" B>c"B7"B>A |"Em" G2"C" E2"Em" E2 :| (g>f) |"Em" e2 B2 B2 gf | 
"Em" (3(efe) B2 B2 (g>f) |"Em" e>de>f"C" g>fg>a |"Em" b2 e2 e2 (g>a) |"G" b>g"D"a>f"Em" g2 (g>f) | 
"C" ed (3(efg)"G" B2"D7" B>A |"G" G>FG>A"Am" B>c"D7"B>A |"Em" G2"C" E2"Em" E2 :|  