Hector Berlioz was a French Romantic composer, best known for his compositions Symphonie fantastique and Grande messe des morts (Requiem). Berlioz made significant contributions to the modern orchestra with his Treatise on Instrumentation.
Jacques Offenbach was a German-born French composer, cellist and impresario of the romantic period. He is remembered for his nearly 100 operettas of the and his uncompleted opera The Tales of Hoffmann.
French composer Claude Debussy He was the most prominent representative of the "impressionist" movement in music. His use of non-traditional scales and chromaticism influenced many composers that came after him.