Construct a harmonious chain of chord progressions that enhance the presented musical piece.
|: aa aa | ag/a/ ba | ff ff | fe/f/ gf | eA cA/c/ | eA cA/c/ | eg fe |1 dc BA :|2 
 dd d :| A |: AB/A/ FA | d3 e | fg/f/ ef | g z"_HEY!" f2 | eA cA/c/ | eA cA/c/ | 
 eg fe |1 dc BA :|2 dd d2 :|  
X:1
L:1/8
M:2/4
K:D
|:"D" aa aa | ag/a/ ba | ff ff | fe/f/ gf |"A7" eA cA/c/ | eA cA/c/ | eg fe |1"D" dc BA :|2 
"D" dd d :| A |:"D" AB/A/ FA | d3 e | fg/f/ ef |"G" g z"D""_HEY!" f2 |"A7" eA cA/c/ | eA cA/c/ | 
 eg fe |1"D" dc BA :|2"D" dd d2 :|  