Construct chord patterns that blend well with the existing music piece.
d/ | c<e a2 a/g/f/e/ a2 | c<e a2{ga} b<B B>d | c<e a2 a/g/f/e/ a2 | 
 c<e B>d c<A A3/2 :: B/ | c<e e>c d<f f>d | c<e e>c [fc]<B B>d | 
 c<e e>c d<f f>d | c<a B>d c<A A3/2 :|  
X:1
L:1/8
M:4/4
K:A
 d/ |"A" c<e a2 a/g/f/e/ a2 | c<e a2{ga}"Bm" b<B"E7" B>d |"A" c<e a2 a/g/f/e/ a2 | 
 c<e"E7" B>d"A" c<A A3/2 :: B/ |"A" c<e e>c"D" d<f f>d |"A" c<e e>c"Bm" [fc]<B"E7" B>d | 
"A" c<e e>c"D" d<f f>d |"A" c<a"E7" B>d"A" c<A A3/2 :|  