Experience the mesmerising sound of the world passing by, recorded from outside and inside a couchette on a SNCF sleeper train one August night. Departure is from Paris Austerlitz just before 11pm. The train journeys through the night and takes 12 hours to get all the way across France to reach Port Bou in Spain. Hear the announcements and the train pausing in the early hours of the morning at Toulouse.