Construct chord patterns that blend well with the existing music piece.
DED DEG | ABA ABc | BAG AGE | GEc E{G}ED | DED DEG | ABA ABc | BAG AGE | 
 GED D3 :: d3 dBG | AGA BGE | d3 dBG | AGA B2 d | g2 e d2 B | AGA BGE | 
 B2 G AGE | DGG G3 :: ADD BDD | ADD ABc | BAG AGE | GEc E{G}ED | ADD BDD | 
 ADD ABc | BAG AGE | GED D3 :|  
X:1
L:1/8
M:6/8
K:Dmix
"G" DED DEG |"D" ABA ABc |"G" BAG AGE |"C" GEc E{G}ED |"G" DED DEG |"D" ABA ABc |"G" BAG AGE | 
"C" GED"D" D3 ::"G" d3 dBG |"C" AGA BGE |"G" d3 dBG |"D" AGA B2 d |"G" g2 e d2 B |"Am" AGA BGE | 
"C" B2 G AGE |"D" DGG"G" G3 ::"D" ADD BDD | ADD ABc |"G" BAG AGE |"Am" GEc E{G}ED |"D" ADD BDD | 
 ADD ABc |"G" BAG AGE |"C" GED"G" D3 :|  