An interactive "Musical Literary Map of London" feature, incorporating a geo-synced soundtrack, AR busking discovery at Underground stations, and a curated "City Guide" of locations from the novel, can be developed to complement Abril Camino's Londres contigo . The app would map specific musical tracks and narrative scenes to landmarks, creating an immersive experience using the book's dual-perspective structure. For more details on the book's setting, visit Goodreads . Londres contigo by Abril Camino - Goodreads