Construct chord patterns that blend well with the existing music piece.
|: A,B, | CA,A,A, CA,A,A, | B,G,G,G, B,G,A,B, | CA,A,A, CA,A,A, | 
 B,G,G,G, A,2 A,B, | CA,A,A, CA,A,A, | B,G,G,G, B,G,A,B, | CA,A,A, CA,A,A, | 
 B,G,G,G, A,2 A, :|[K:A] cd |: efed cdef | =ged=c B=G^cd | efed cAcd | 
 e a2 ^g a2 ef | =gfed cdef | =ged=c B=GBd | =c2 (3BcB A=GED | ED =C2 A,2 :|  
X:1
L:1/8
M:2/2
K:Amin
|: A,B, |"Am" CA,A,A, CA,A,A, |"G" B,G,G,G, B,G,A,B, |"Am" CA,A,A, CA,A,A, | 
"G" B,G,G,G,"Am" A,2 A,B, |"Am" CA,A,A, CA,A,A, |"G" B,G,G,G, B,G,A,B, |"Am" CA,A,A, CA,A,A, | 
"G" B,G,G,G,"Am" A,2 A, :|[K:A] cd |:"A" efed cdef |"G" =ged=c B=G^cd |"A" efed cAcd | 
"G" e a2 ^g a2 ef |"A" =gfed cdef |"G" =ged=c B=GBd |"Am" =c2 (3BcB A=GED |"Em" ED =C2"Am" A,2 :|  