Théodore Dubois (24/08/1837 - 11/06/1924), an important French (born in Rosnay) organist, composer and teacher of music on the Paris music scene during the 1860's. In 1861 he was awarded the prestigious Prix de Rome for composition. He studied at Reims and the Paris Conservatory where he later was the director from 1896-1905. The composer of four operas, a large-scale ballet, several oratorios, a requiem mass as well as many orchestral works, Dubois remained a composer of the "academic style." Much overshadowed by his French contemporaries Charles Gounod, Gabriel Fauré and Camille Saint-Saëns in composition, he is best known for this book, Notes et Étues d'Harmonie (Notes and Lessons in Harmony), still a source for harmonic practice in the Romantic style. He succeeded Saint-Saëns as organist at the Madelaine in 1877 and was highly regarded as an excellent music teacher.