ABSENCE (2016) shows disappearing materials, including a sound, hidden in the gloss lacquer layer on top of the image.
Colored chemicals in the picture are only visible during the disappearing process of melting ice.
The edition can be played as a vinyl on a record player. The nebulous sound made by Regina Lok Yan To,  appears briefly to occupy a momentary space. Repeated replaying of the sound makes it wear out and become less audible.