Formulate chord sequences to heighten the harmonic quality of the specified musical portion.
G B d | B3/2 A/ G | F A d | c3 | F A d | c3/2 B/ A |1 G B d | B3 :|2 G3/2 G/ G | 
 G z z |: D c D | B3/2 A/ G | A3/2 G/ F | G/F/ G/A/ B | D c D | B3/2 A/ G | 
 A/A/ A F | G z z ::[K:C] E z G | A z E | G z F | F3 | f3/2 B/ B | B3 | 
 e3/2 c/ c | c3 | E z G | A z E | G z F | F3 | f2 B | g2 B | c3/2 c/ c | c z z :|  
X:1
L:1/4
M:3/4
K:G
"G" G B d | B3/2 A/ G |"D7" F A d | c3 | F A d | c3/2 B/ A |1"G" G B d | B3 :|2"G" G3/2 G/ G | 
 G z z |:"D7" D c D |"G" B3/2 A/ G |"D7" A3/2 G/ F |"G" G/F/ G/A/ B |"D7" D c D |"G" B3/2 A/ G | 
"D7" A/A/ A F |"G" G z z ::[K:C]"C" E z G | A z E |"G7" G z F | F3 | f3/2 B/ B | B3 | 
"C" e3/2 c/ c | c3 | E z G | A z E |"F" G z F | F3 |"G7" f2 B | g2 B |"C" c3/2 c/ c | c z z :|  