Impromptu is a 1991 British-American period drama film directed by James Lapine , written by Sarah Kernochan , produced by Daniel A. Sherkow and Stuart Oken, and starring Hugh Grant as Frédéric Chopin and Judy Davis as George Sand . The film was shot entirely on location in France as a British production by an American company. The main location used was at the Chateau des Briottières outside of Angers , in the Loire Valley .