Assemble an assortment of chord duos that intensify the harmonious features of the given musical masterpiece.
d/A/ z | d/A/ z | d d | d d |: A/ A A/ | A/A/ A | A/c/B/G/ | A z :: 
 A/ d d/ | d/d/ d | A/ d d/ | e/f/ d :|  
X:1
L:1/4
Q:1/4=160
M:2/4
K:C
"D" d/A/ z | d/A/ z | d d | d d |:"Am" A/ A A/ | A/A/ A |"Am" A/c/"G"B/G/ |"Dm" A z :: 
"Dm" A/ d d/ | d/d/ d | A/ d d/ | e/f/ d :|  