Develop an appropriate set of chord transitions to enhance the existing music piece.
(3(ABc) | dcdA FAdf | edcB A2 g2 | fgaf bgec | dcdf ec (3(ABc) | dcdA FAdf | 
 edcB A2 g2 | fgaf bgec | d2 f2 d2 :: fg | afaf dfaf | bgbg efge | 
 afaf bagf | edcB Agfe | dcdA FAdf | edcB Aceg | fgaf bgec | d2 f2 d2 :|  
X:1
L:1/8
M:4/4
K:D
 (3(ABc) |"D" dcdA FAdf |"A" edcB A2 g2 |"D" fgaf"A" bgec |"G" dcdf"A" ec (3(ABc) |"D" dcdA FAdf | 
"A" edcB A2 g2 |"D" fgaf"A" bgec |"D" d2 f2 d2 :: fg |"D" afaf dfaf |"G" bgbg efge | 
"D" afaf"G" bagf |"A" edcB Agfe |"D" dcdA FAdf |"A" edcB Aceg |"D" fgaf"A" bgec |"D" d2 f2 d2 :|  