The film marvellously shows the nostalgic dream of the old Paris and its common people. With melancholic irony, Clair tells a story of the milieu of backstreets and backyards, of street singers, pickpockets, fiddlers and strange townsmen. Here, his grasp into the present does not become realistic depictions of circumstances, but a poetic romance, for which reality is only one aspect of life.
In this regard, especially the sound has turned out quite well. And how hesitantly Clair used this new technical innovation! His generally critical attitude towards sound in films induced, that "Sous les toits" is mainly composed of silent parts (including many dialog scenes), which are highlighted with music or noises such as trains driving past. The song "Sous Les Toits De Paris" of Albert, the street singer, becomes to the red thread which links several scenes and bridges time distances. A fight taking place in the dark only informs the viewer through noises. For that, we witness a dispute, where the matter is uninteresting and predictable, without any sound - shot through a glass door. One can say sound is especially used for enrichment and left out when it would be needless. Thus, a film came into being that wonderfully combines sentiment, humor and intelligence with languishingly beautiful tunes.