Develop harmonious chord sequences to enhance the given tune.
|: G>B d3 c | B>A GB D2 |1,3 c>B A2 e2 | d>c B/c/B/A/ G2 :|2,4 c>B Af Af | g2 g4 :: 
 d>g b2 b2 | d>f a2 a2 |1,3 c>B AG FE | D>C B,/C/B,/A,/ G,2 :|2,4 c>B Af Af | 
 g2 g4 :|  
X:1
L:1/8
M:3/4
K:G
|:"G" G>B d3 c | B>A GB D2 |1,3"D7" c>B A2 e2 | d>c B/c/B/A/ G2 :|2,4"D7" c>B Af Af |"G" g2 g4 :: 
"G" d>g b2 b2 |"D7" d>f a2 a2 |1,3 c>B AG FE |"G" D>C B,/C/B,/A,/ G,2 :|2,4"D7" c>B Af Af | 
"G" g2 g4 :|  