Design harmonic structures to improve the musical piece.
DD AG/E/ | DD cB/c/ | dA AG/E/ | cB/c/ AG/E/ | DD AG/E/ | DD cB/c/ | 
 dA AG/E/ | D2 D2 :| A>B cB/c/ | A/G/A/B/ cB/c/ | dA AG/E/ | 
 cB/c/ AG/E/ | DD AG/E/ | DD cB/c/ | dA AG/E/ | D2 D2 :|  
X:1
L:1/8
M:2/4
K:Dmix
"Dm" DD AG/E/ | DD"C" cB/c/ |"Dm" dA AG/E/ |"C" cB/c/"Am" AG/E/ |"Dm" DD AG/E/ | DD"C" cB/c/ | 
"Dm" dA"Am" AG/E/ |"Dm" D2 D2 :|"Dm" A>B"C" cB/c/ |"Dm" A/G/A/B/"C" cB/c/ |"Dm" dA"Am" AG/E/ | 
"C" cB/c/"Am" AG/E/ |"Dm" DD AG/E/ | DD"C" cB/c/ |"Dm" dA"Am" AG/E/ |"Dm" D2 D2 :|  