Formulate chord combinations to increase the harmonic complexity of the specified musical excerpt.
cB A2 | AE C2 | E2 BA | G2 z2 | GF E2 | BA G2 | Ad c^B | c2 z2 | BA C2 | 
 ^AB f2 | Ge ^AB | f3 e | ^dc Bf | e2 B2 | ^d !>!g2 f | ee e z |: e2 a>e | 
 cf/e/ cA | e2 a>e | cf/e/ cA | Gd/c/ B2 | Gd/c/ B2 | cf dB | AA A z :: 
[K:D] f2 d2 | A3 ^G/A/ | f2 a2 | g2 c2 | ea g2 | fe d2 | A!>!f Ae | dd d z :|  
X:1
L:1/8
M:2/4
K:A
"A" cB A2 | AE C2 |"E7" E2 BA | G2 z2 | GF E2 | BA G2 |"A" Ad c^B | c2 z2 |"F#m" BA C2 | 
"B7" ^AB f2 |"E" Ge ^AB | f3 e |"B7" ^dc Bf |"E" e2 B2 |"B7" ^d !>!g2 f |"E" ee e z |:"A" e2 a>e | 
 cf/e/ cA | e2 a>e | cf/e/ cA |"E7" Gd/c/ B2 | Gd/c/ B2 |"A" cf"E7" dB |"A" AA A z :: 
[K:D]"D" f2 d2 | A3 ^G/A/ | f2 a2 |"A7" g2 c2 | ea g2 |"D" fe d2 |"A7" A!>!f Ae |"D" dd d z :|  