Develop an appropriate set of chord transitions to enhance the existing music piece.
Ad dc | BB cA | Gc BA | BG AA | A2 d2 | cB cA | Gc BA | BG AA | 
[K:C] cg a/g/f | ed/e/ f/e/d | cf/e/ f/e/d | d/e/c dd | cg a/g/f | f/e/d/e/ f/e/d | 
 cf/e/ f/e/d | d/e/c dd |]  
X:1
L:1/8
Q:1/4=144
M:2/4
K:G
"D" Ad dc | BB cA |"G" Gc BA |"A" BG"D" AA | A2 d2 | cB cA |"G" Gc BA |"A" BG"D" AA | 
[K:C]"C" cg a/g/f | ed/e/ f/e/d | cf/e/ f/e/d |"D" d/e/c"G" dd |"C" cg a/g/f | f/e/d/e/ f/e/d | 
 cf/e/ f/e/d |"D" d/e/c"G" dd |]  