Construct a harmonious chain of chord progressions that enhance the presented musical piece.
|: fe | d2 B"^/A" AFD | DFA Bcd | efg"^/G" fed | cde"^/C#" ABc | 
 d2 B"^/A" AFD | DFA Bcd | efg"^/G" fed | ABc d2 :| fg | (afd)"^/A" dfg | 
 (aba)"^/A" afd | (ge=c)"^/G" cef | gag efg | (afd)"^/A" dfg | (aba)"^/A" agf | 
 gag fed | ABc"^/C#" dfg | (afd)"^/A" dfg | (aba)"^/A" afd | (ge=c)"^/G" cef | 
 gag efg | afa beg | fed cBA | Bcd efg | fdd d2 ||  
X:1
L:1/8
Q:1/8=116
M:6/8
K:D
|:"A7" fe |"D" d2 B"^/A" AFD |"D" DFA"G" Bcd |"Em" efg"^/G" fed |"A" cde"^/C#" ABc | 
"D" d2 B"^/A" AFD |"D" DFA"G" Bcd |"Em" efg"^/G" fed |"A" ABc"D" d2 :| fg |"D" (afd)"^/A" dfg | 
"D" (aba)"^/A" afd |"C" (ge=c)"^/G" cef |"C" gag"A" efg |"D" (afd)"^/A" dfg |"D" (aba)"^/A" agf | 
"G" gag"D/F#" fed |"A" ABc"^/C#" dfg |"D" (afd)"^/A" dfg |"D" (aba)"^/A" afd |"C" (ge=c)"^/G" cef | 
"C" gag"A" efg |"D" afa"Em" beg |"Bm" fed"F#m" cBA |"G" Bcd"A" efg |"D" fdd"D" d2 ||  