Les Invisibles (2005)
Directed by Thierry Jousse

Film Synopsis

Bruno and Noël are a pair of avant-garde musicians who construct electronic music by processing fragments of ambient sound.  They manage to find a producer, Carole Stevens, to market their work, but Bruno's moody persona minimises the likelihood of them getting a worthwhile contract.  Meanwhile, Bruno is looking for a girlfriend and succeeds in finding someone on a phone chat network.  The girl, Lisa, agrees to meet him in a hotel room, where she offers to make love to him providing they do so in complete darkness.  After a few liaisons of this kind, Lisa mysteriously disappears.  With only his recollection of her voice and the sounds she made in bed with him, Bruno resolves to track her down...