Synesthesia: faculty to experience sensations of a particular sense modality, provoked by a different one. The piece tries to literally “search” the sound Synesthesia of the audience and the performers. The PD live electronics is used as a tool to “expand” the instruments capabilities, and generate sounds and sensation of space provoked by a different source and location. The score is written in a progressive structure that is constantly using or recycling the acoustic and electronic material that it is transformed in several ways during time. The search for a very clear and programmed interaction between the acoustic players and the computer player is crucial, although there are moments of controlled indeterminacy.