Generate a piece of music. The title is Nao wugeng. It belongs to the genres of "Xiaodiao. Qingge"and " Aisu". It is from Asia, China, Shanxi Lingxian. Its meter type is simple duple.  
X:1
T:Nao wugeng
T:Nao wugeng
L:1/8
M:2/4
I:linebreak $
K:Bb
V:1 treble nm="Voice" snm="V"
V:1
 g2 gb | gf ec | f2 g2 | c'f' e'f' | e'c' bc' | g2 gb | gf ec | f2 gb | f2 g2 | c'2 e'c' | b3 c' | %11
 f'3 e' | c'2 c'2 | g2 gb | gf ec | ff gb | f2 g2 | bg f2 | g2 z2 | c'4 | f' c'2 b | g2 b2 | %22
 g2 f2 | f f2 g | dc BB | c3 f | c4 || %27  