Develop harmonious chord sequences to enhance the given tune.
|: G | c>d cB A3 c | d>e dc B3 B | cB AG ^FD Gc | B2 A2 G3 :: d | 
 e2 e2 d3 e | f2 f2 e3 g | ag ab | c'b/a/ gf | e2 d2 c3 :|  
X:1
L:1/8
M:4/4
K:C
|: G |"C" c>d cB"F" A3 c |"Dm" d>e dc"G" B3 B |"Am" cB AG"C7" ^FD"G" Gc | B2"D7" A2"G" G3 :: d | 
"C" e2 e2"G" d3 e |"G7" f2 f2"C" e3 g |"F" ag ab |"C" c'b/a/ gf | e2"G7" d2"C" c3 :|  