Create a series of chord progressions to improve the harmonic structure of the given music piece.
d |: AB d>A B d2 d/B/ | A/B/d d/B/A B3 d | AB d>e fe d>e |1 fedB A3 d :|2 
 fe dB A3 f/g/ |: af ed/e/ f/d/e/c/ df/g/ | afed B3 f/g/ | 
 af ed/e/ f/d/e/c/ dd/e/ |1 fedB A3 d :|2 fedB A3 z ||  
X:1
L:1/8
M:4/4
K:D
 d |:"D" AB d>A B d2 d/B/ | A/B/d d/B/A"G" B3 d |"D" AB d>e fe d>e |1"D" fe"G"dB"D" A3 d :|2 
"D" fe"G" dB"D" A3 f/g/ |:"D" af ed/e/ f/d/e/c/ df/g/ | afed"G" B3 f/g/ | 
"D" af ed/e/ f/d/e/c/ dd/e/ |1"D" fe"G"dB"D" A3 d :|2"D" fe"G"dB"D" A3 z ||  