A Certain Geography is a site-specific hybrid project bordering between a live sound performance, a telematic soundwalk and a listening workshop. A text-based piece, written in relationship to a specific space in London, is used to score the performance of a soundwalk, streamed live in Aix-en-Provence. The audience can read the text and reflect upon it while listening to the incoming sound stream. The performance involves the artist walking on a trajectory and using her voice to communicate her thoughts and her body to amplify the spaces she encounters. The sounds of her voice and body coexist, interact with and interject the temporal and textural layers and sounds of the listening room where the audience is located. Moreover, the audience can participate in the performance by communicating with the artist via twitter and instigating her to take actions.