Devise well-fitting chord transitions that enhance the given musical work.
f2 ff f2 gf | e2 c2 d3 d | c2 d2 efec | d2 e2 f2 d2 | f2 ff f2 gf | 
 e2 c2 d4 | g3 f e2 d2 | B2 c2 d4 :: d2 fd adfd | =c2 ec gcec | 
 d2 fd adfa | bgec dcBA | d2 fd adfd | =c2 ec gcec | d2 fd adfa | bgec d4 :|  
X:1
L:1/8
M:2/2
K:D
"D" f2 ff f2 gf |"A7" e2 c2"D" d3 d |"A7" c2 d2 efec |"D" d2 e2 f2 d2 |"D" f2 ff f2 gf | 
"A7" e2 c2"D" d4 |"G" g3 f"A7" e2 d2 |"A7" B2 c2"D" d4 ::"D" d2 fd adfd |"C" =c2 ec gcec | 
"D" d2 fd adfa |"A7" bgec dcBA |"D" d2 fd adfd |"C" =c2 ec gcec |"D" d2 fd adfa |"A7" bgec"D" d4 :|  