Formulate chord combinations to increase the harmonic complexity of the specified musical excerpt.
|: Bd g2 | g/f/e/d/ g2 | Bd g2 | aA A2 | Bd g2 | g/f/e/d/ g2 | Bd A>c | 
 BG G2 :: Bd dc/B/ | ce e>c | Bd e/d/B/G/ | BA A2 | Bd dc/B/ | 
 ce e>c | Bd A>c | BG G2 :|  
X:1
L:1/8
M:2/4
K:G
|:"G" Bd g2 | g/f/e/d/ g2 | Bd g2 |"Am" aA"D7" A2 |"G" Bd g2 | g/f/e/d/ g2 | Bd"D7" A>c | 
"G" BG G2 ::"G" Bd dc/B/ |"C" ce e>c |"G" Bd"Em" e/d/B/G/ |"Am" BA"D7" A2 |"G" Bd dc/B/ | 
"C" ce e>c |"G" Bd"D7" A>c |"G" BG G2 :|  