Yu is a dance-music interactive performance in collaboration with a Chinese dancer Rui Yao, who is specialized in water sleeves. The data stream of the dancer's movement, analyzed by the wearable sensor attached to her clothes, is sent to the composer's Max/MSP patch wirelessly and generates all the music in real-time.

In Chinese opera, water sleeves refer to white silk extensions to the cuff of garment sleeves. They are so named because performers can use them to produce movements like the ripples of water. The piece was made to explore more possibilities of the modern expression in traditional Chinese art.