Produce an array of chord pairings to amplify the harmony in the given musical piece.
|: G3/2 A/ B B | c3/2 B/ A c | B3/2 A/ G F | E2 D2 | G3/2 A/ B B | 
 c3/2 B/ A c | B G A F | G2 G2 :: d c/B/ A/B/ c | c B/A/ G/A/ B | 
 A G F G | A2 A2 | d c/B/ A/B/ c | c B/A/ G/A/ B | A G F A | 
 G2 G2 :: _B A/G/ _B A/G/ | F G A2 | D E F G | A _B A G | _B A/G/ _B A/G/ | 
 F G A2 | D E F G | A G G2 :|  
X:1
L:1/4
M:4/4
K:G
|:"G" G3/2 A/ B B |"C" c3/2 B/"D7" A c |"G" B3/2 A/"Em" G F |"A7" E2"D7" D2 |"G" G3/2 A/ B B | 
"C" c3/2 B/"D7" A c |"G" B G"D7" A F |"G" G2 G2 ::"G" d c/B/"Am" A/B/ c |"D7" c B/A/"G" G/A/ B | 
"A7" A G F G |"D7" A2 A2 |"G" d c/B/"Am" A/B/ c |"D7" c B/A/"G" G/A/ B |"A7" A G"D7" F A | 
"G" G2 G2 ::"Gm" _B A/G/ _B A/G/ |"D7" F G A2 | D E F G | A _B"G" A G |"Gm" _B A/G/ _B A/G/ | 
"D7" F G A2 | D E F G | A G"G" G2 :|  