Note: this post has dead links which have to be up-dated.
Liu Yao Jin (柳搖金 liu3 yao2 jin1)
This is one of my favourite pieces of Guangdong Music (guangdong yinyue). "Guangdong Yinyue", literally Guangdong music, as a descriptive name is actually a misnomer, as there are many types of traditional music in Guangdong.
Recording of ensemble lead by the gaohu played by Yu Qiwei
Liu Yao Jin - erhu: Yu Qiwei
This is one is also played by Yu Qiwei, but on the erhu.