KikiT VisuoSonic(s) 'smart building' potential lies in its capacity to use sound and movement to produce artworks that recognise and respond to human presence and ambient sound. KikiT(s) within buildings can enliven daily usage and when viewable from the exterior they can create a sense of the building responding to the world around it. The images on the right relate to a proposal to project KikiT(s) onto the exterior of the Palau de les Arts Reina Sofia Opera House in Valencia, activated by the music in the auditorium.