Author description: Written in Catalan, The Fugue Book thematizes the mutability and precarious aspects of personal identity. Using "Facebook Connect," the story draws personal information about the reader and his friends (the main characters) from Facebook itself. The work combines a variety of modes, genres, and platforms: wikis, discussion forums, erotic stories, blogs, and social media. Most texts are actual email messages, which is to say that the real email of the reader is a fundamental component of the text. The multimedia structure is very simple in that it only integrates static images, parts of speech synthesis (adapted to the reader), and text. The languages of programming are ActionScript and PHP.