A symphony for China's dying language of Nu Shu
7 October 2015 Last updated at 06:27 BST
The Chinese language of Nu Shu was created by women for women in Hunan in the 13th Century, and now it is being showcased in a new multimedia symphony.
It is one of China's disappearing languages and has a long tradition of singing.
US-based Chinese composer Tan Dun travelled to the remote area of Jiangyong county over a 12-year period, to collect the stories and songs passed down over generations.