Generate a piece of music. The title is Songlang dangbin. It belongs to the genres of "Xiaodiao"and " Shisong". It is from Asia, China,Hunan Liuyang. Its meter type is irregular.  
X:1
T:Songlang dangbin
T:Songlang dangbin
L:1/8
M:3/4
I:linebreak $
K:D
V:1 treble nm="Voice" snm="V"
V:1
 BA Bd e>f | ff de/d/ B2 | dd/e/ FA B2 | dB A2 F2 | BA Bd e>f | ff de/d/ B2 | dd/e/ FA B2 | %7
 dB A2 F2 |[M:2/4] d2 B2 | A2 B2 |[M:3/4] dd/e/ FA B2 | dB A2 F2 || %12  