Generate a piece of music. The title is Duihua. It belongs to the genres of "Wuge"and " Shangu". It is from Asia, China,Hebei, Gaoyi. Its meter type is irregular.  
X:1
T:Duihua
T:Duihua
L:1/8
M:4/4
I:linebreak $
K:Ab
V:1 treble nm="Voice" snm="V"
V:1
 ce fc/e/ c/B/A A2 | ec/e/ fe cc/B/ A2 | AB c>B =A B3 | F>_A BB A4 | GF AA/A/ AA/F/ E2 | %5
 A/F/c B>A C E3 | BB A2 c e2 f |[M:2/4] c/B/ A3 |[M:4/4] f>e ce f2 e2 |[M:3/4] c>B B A2 B | %10
 cB B A2 z |[M:2/4] A>B e2 |[M:3/4] f e2 c/B/ A2 |[M:4/4] ec/e/ cc BA/B/ cB | A2 FE- E4 || %15  