Formulate chord combinations to increase the harmonic complexity of the specified musical excerpt.
|: e2 (f g)fg | AAA (g2 e) | faf gec | dcd (f2 d) | e2 (f g)fg | AAA (g2 e) | 
 faf gec | dfe d3 :: c2 d eAA | eA(f e)cA | c2 d ecA | Bcd f2 e | 
 c2 d eAA | eA(f e)cA | faf gec | dfe d3 :|  
X:1
L:1/8
M:6/8
K:D
|:"A" e2 (f g)fg | AAA (g2 e) |"D" faf"A7" gec |"D" dcd (f2 d) |"A" e2 (f g)fg | AAA (g2 e) | 
"D" faf"A7" gec |"D" dfe d3 ::"A" c2 d eAA | eA(f e)cA |"A" c2 d ecA |"Bm" Bcd"E" f2 e | 
"A" c2 d eAA | eA(f e)cA |"D" faf"A7" gec |"D" dfe d3 :|  