Song cites the writing of the late 18th century writer, Yu Tukgong, who, in his Yu Uchun Jon, describes going to ask advice of Yu Uchun about playing haegum properly, because people have been teasing him about his haegum just sounding as if it is imitating the sounds of insects and birds, the way beggars often sound when playing haegum (Song 2001,116-17)