Create a series of chord progressions to enhance the harmonic aspect of the given piece of music.
A |: d3 A2 d | BAA dBA | d3 A2 d | BAA aef | d3 A2 d | 
 BAA dBA | g2 f efd | cAA aef :| d3 f2 d | aef dBA | 
 d3 f2 d | aAa fef | d3 f2 d | aAa fed | g2 f efd | 
 cAA aef :| d3 GBA | dBd ecA | d3 GBB | Ace aef | 
 d3 GBA | dBd ecA | g2 f efd | cAA aef :| d3 a2 f | 
 dfd ecA | d3 a2 f | dfd aef | d3 a2 f | dfd ecA | 
 g2 f efd | cAA aef | d3 a2 f | dfd ecA | d3 a2 f | 
 cAA aef | gfg efd | GBd ecA | g2 f efd | cAA aef |]  
X:1
L:1/8
M:6/8
K:D
 A |:"D" d3"A" A2 d |"D" BAA"A7" dBA |"D" d3"F#" A2 d |"E" BAA"A" aef |"D" d3"A" A2 d | 
"D" BAA"F#" dBA |"G" g2 f"Ab" efd |"A" cAA"A" aef :|"D" d3"A" f2 d |"D" aef"A" dBA | 
"D" d3"F#" f2 d |"E" aAa"A" fef |"D" d3"A" f2 d |"D" aAa"F#" fed |"G" g2 f"Ab" efd | 
"A" cAA"A" aef :|"F#" d3"G" GBA |"Ab" dBd"A" ecA |"F#" d3"G" GBB |"E" Ace"A" a"G"ef | 
"F#" d3"G" GBA |"Ab" dBd"A" ecA |"G" g2 f"Ab" efd |"A" cAA"A" aef :|"D" d3"C#" a2 f | 
"B" dfd"A" ecA |"B" d3"A" a2 f |"B" dfd"C#" aef |"D" d3"C#" a2 f |"B" dfd"A" ecA | 
"G" g2 f"Ab" efd |"A" cAA"A" aef |"D" d3"C#" a2 f |"B" dfd"A" ecA |"B" d3"A" a2 f | 
"B" cAA"C#" aef |"E" gfg"F#" efd |"G" GBd"A" ecA |"G" g2 f"Ab" efd |"A" cAA"A" aef |]  