Clément Philibert Léo Delibes was a French composer, best known for his ballets and operas. His works include the ballets Coppélia (1870) and Sylvia (1876) and the opera Lakmé (1883). (via Wikipedia)
The protagonist of the film is Ernst Theodor Amadeus Hoffmann, a young lawyer, musician, and writer who inhabits two dimensions at once: the imaginary world of his fictional works and the ordinary reality of Nuremberg.