Devise well-fitting chord transitions that enhance the given musical work.
fe | d2 Ad BdAB | d2 fd edBc | d2 Ad BdAd | (3(Bcd) ef g2 :: fg | af f2 df f2 | 
 af f2 geeg | af f2 dfed | (3(Bcd) ef g2 :|  
X:1
L:1/8
M:4/4
K:D
 fe |"D" d2 Ad BdAB |"Bm" d2 fd edBc |"Em" d2 Ad BdAd |"A7" (3(Bcd) ef g2 :: fg |"D" af f2 df f2 | 
 af f2"A7" geeg |"D" af f2"Bm" dfed |"Em" (3(Bcd) ef"A7" g2 :|  