Formulate chord combinations to increase the harmonic complexity of the specified musical excerpt.
|: CFA | [cA] z [BG] z | [AF][GE]"^(C)" [AF]{c}[BE] | [AF]3 [EG] | 
 [AF][GE] F2 | F [EG]2 F | [cE] z (3[BE]AB | [AF]4- | [AF][AF] [BG][=B^G] | 
 [cA]3 [d_B] | [_ec][dB] [cA]B | AG cB | AG F2 | F{A}G-"^(Dm)" GF | 
 (3AGF (3FED | D4- | D :: def | (3gag (3fef | (3gag (3fef | 
 (3gag f2- | fd ef | (3gag (3fef | (3gag (3fef |{^g} [af][^gf] [af]2- | 
 [af]d ef | (3gag (3fef | (3gag (3fef | (3gag f2- | fd ef | 
 [gd]3 [^gd] | (3[a^c]gf (3fed | d4- | d :|  
X:1
L:1/8
M:2/4
K:F
|: CFA |"F" [cA] z"C7" [BG] z |"F" [AF][GE]"^(C)" [AF]{c}[BE] |"F" [AF]3"C7" [EG] | 
"F" [AF][GE] F2 |"C7" F [EG]2 F | [cE] z (3[BE]AB |"F" [AF]4- | [AF][AF]"C7" [BG][=B^G] | 
"F" [cA]3 [d_B] |"Bb" [_ec][dB] [cA]B |"C7" AG cB |"A7" AG"Dm" F2 |"Gm" F{A}G-"^(Dm)" GF | 
"A7" (3AGF (3FED |"Dm" D4- | D :: def |"Gm" (3gag"Dm" (3fef |"Gm" (3gag"Dm" (3fef | 
"Gm" (3gag"Dm" f2- | fd ef |"Gm" (3gag"Dm" (3fef |"Gm" (3gag"Dm" (3fef |{^g} [af][^gf] [af]2- | 
 [af]d ef |"Gm" (3gag"Dm" (3fef |"Gm" (3gag"Dm" (3fef |"Gm" (3gag"Dm" f2- | fd ef | 
"Gm" [gd]3 [^gd] |"A7" (3[a^c]gf (3fed |"Dm" d4- | d :|  