After Madame de Pompadour's death this salon was transferred to the ownership of Madame Adélaïde who transformed it into her Grand Cabinet. The present cornice is restored to the style it had when Madame Adélaïde occupied the room. The lovely instrument belonged to Madame Adélaïde which is most likely also the case with the violin - Madame Adélaïde was renowned for her excellent violin-play.
The two large paintings are of Madame Adélaïde's elder sisters, Madame Henriette and Madame Elisabeth - both painted by Nattier. Three of Madame Adélaïde's other sisters - Mesdames Victoire, Sophie and Louise - are portrayed in a portrait that hangs above the door but this is painted by Douais. The chairs are gilded and lined with Beauvais tapestry.