Aqua et spiritus explores the transformation of matter through sound. In a recording studio an installation was set up, in which one kilogram of dry ice (solid carbon dioxide) was introduced into one litre of water. Using a hydrophone, the acoustic phenomena generated during the sublimation of carbon dioxide and the cooling and freezing of the water were recorded.

The resulting sounds are treated as a composition and released as a 12-inch vinyl record. The work translates an ephemeral physical process into a sonic form, transforming an experiment in material change into a reproducible musical object.