An art installment in wich the artist has imagined the room 25 at the Beat Hotel rue Git-le-Coeur, where Brion Gysin and William Burroughs lived between 1957 and 1965. The room was an improvised center of intellectual and creative avant-garde. They used there tapes and tape recorders, they discovered through their work that language manipules us and that one can enlarge his perception fields using language. The question what is the use of a tape-recorder leads to the question what is the use of life. The question may not be what to do in one's life, but how use one's life putting it in question which carry new subjectivities : play with life to reveal it unhoped potentialities.