In one scene you can clearly see that ''Rubber 2'' is playing in the cinema that shows "Waves".
Thomas Bangalter, one half of the band duo Daft Punk, makes a cameo appearance as a patient reading a magazine.
Dupieux about the soundtrack choice: "This track by Philip Glass dates back to 1971. When you listen to it, in the film, it looks very simple but in reality it's a piece of almost 1h30 that keeps evolving in a subtle way. I only use the first five minutes. I could have made a Canada Dry music that imitates Philip Glass but it would have been much less inspired. I listened to Philip Glass's entire discography. I was looking for the perfect thing and I fell in love with it. Given its duration, the idea at the beginning was to use several passages of the song, especially since we had managed to negotiate the rights with the publishers. But during the assembly I realized that if we do not have the start, the track is incomprehensible. This way of using the first five minutes of the song creates an impression of endless loop, it becomes almost distressing. There is never a climax, we always come back to the same point. I came to this conclusion very quickly, on the set, even before thinking of Philip Glass. I did not want to do a BO, to accompany the film with small musical intentions as we usually do. You needed one piece of music that keeps coming back."
Also, Zog's Assistent can be seen wearing a "Rubber 2" t-shirt while trying to film the girl falling asleep.
The soundtrack consists of only the first five minutes of "Music With Changing Parts" by Philip Glass.