Familiar stranger, 2016, is a work following up a research on ‘Synesthesia’. It reflects on the unexplained cause of such uncommon associations between senses and speculates upon a mechanism that translates information from one sense to another, based on String Theory. Frequencies become a source of transcription in this sound installation which recreates the experience of a synesthete employing text, colour and sound. It uses the alphabet perceived by Isa Oxenaar, a grapheme-colour synesthete, as the basis for a series of translations from letters to colours to musical notes.